|| ANATOMY || DISEASES || DRUGS || HEALTH TOPICS || USA HEALTH STATS || CHINA HEALTH STATS || GENOMICS || LABORATORY MICE || LUPUS ||
Medical Dictionary banner
Medical Dictionary - Dictionary of Medicine and Human Biology


Medical Dictionary


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


manudynamometer (man′u-di-na-mom′e-ter)
In dentistry, a device for measuring the force exerted by the thrust of an instrument. [L. manus, hand, + G. dynamis, force, + metron, measure]

manus, gen. and pl. manus (ma′nus) [TA]
SYN: hand. [L.]

MAO
Abbreviation for monoamine oxidase.

MAOI
Abbreviation for monoamine oxidase inhibitor.

map
A representation of a region or structure; E.G., of a stretch of DNA. choroplethic m. a method of mapping to display quantitative information such as death rates in defined jurisdictions (states, counties, etc.) by color coding or shading. [G. choros, district, + plethos, multitude, + -ic] chromosome m. a systematic, semiabstract representation of the physical position of loci on a karyotype. Cf.:genetic m.. conformational m. SYN: Ramachandran plot. contig m. a physical m. of a chromosome or stretch of DNA constructed from sets of overlapping clones (contigs). cytogenetic m. a m. in which the classical bonding pattern of a chromosome is shown. fate m. determination in very young embryos of the cellular origin of specific organs or structures. SYN: germinal localization. genetic m. an abstract representation of the ordered array of genetic loci such that the interval between entries has algebraic signs and magnitude proportional to the expected number of crossings over between them and distances are algebraically additive; e.g., on a genetic m. the combined distance between locus A and locus C is the algebraic sum of the two distances between loci A and B, and B and C. isodemographic m. diagrammatic method of displaying countries or administrative jurisdictions within a country in two-dimensional maps with each area directly proportional to the population density of the country or jurisdiction. [iso- + G. demos, people, + grapho, to write + -ic] linkage m. an abstract mathematical representation of genetic loci that conserves order of loci which are spaced in such a way that the distances are algebraically additive; conventionally, a m. is scaled so that as distances between loci become smaller the ratio of the m. distance to the value of the recombination fraction approaches 1 and independently assorting loci are infinitely far apart. physical m. a m. of a stretch of DNA with ordered landmarks a known distance from each other; the ultimate physical m. would be the base sequence of the entire chromosome. restriction m. the order of restriction sites along a chromosome or plasmid. sequence-tagged site (STS) m. a m. representing the order and spacing of sequence-tagged sites within a stretch of DNA. spot m. m. showing the geographic location of people with a specific attribute, e.g., cases of an infectious disease.

map distance
The degree of separation of two loci on a linkage map, measured in morgans or centimorgans.

mappine (map′en)
SYN: bufotenine.

mapping (map′ing)
The process of identifying the relative position of sites or elements. cardiac m. a method by which local cardiac potentials are spatially depicted in an integrated manner as a function of time (isochrone map) or potential (isopotential map). chromosome m. the process of determining the position of loci on specific chromosomes and constructing a diagram of each chromosome showing the relative positions of loci; techniques include family studies with linkage analysis, somatic cell hybridization, and chromosome deletion m.. gene m. genetic map. S1 nuclease m. a method for locating the 5′ end of a transcript in a mixture of RNA.

mapping function
In linkage analysis, a formula that converts the recombination fraction (which is on the probability scale) into map distance (in morgans).

maprotiline (ma-pro′ti-len)
A tricyclic antidepressant used in the treatment of various depressive illnesses, and for relief of anxiety associated with depression.

MAPs
Abbreviation for microtubule-associated proteins, under protein.

Marañón
Gregorio, Spanish endocrinologist, 1887–1960. See M. sign, syndrome.

marantic (ma-ran′tik)
SYN: marasmic. [G. marantikos, wasting]

marasmic (ma-raz′mik)
Relating to or suffering from marasmus. SYN: marantic.

marasmoid (ma-raz′moyd)
Resembling marasmus. [G. marasmos, withering, + eidos, resemblance]

marasmus (ma-raz′mus)
Cachexia, especially in young children, primarily due to prolonged dietary deficiency of protein and calories. SYN: marantic atrophy, Parrot disease (2) , pedatrophia, pedatrophy. [G. marasmos, withering] nutritional m. extreme weakness and wasting secondary to malnutrition.

marc (mark)
The residue remaining after percolation of a drug. [Fr. fr. marcher, to trample]

Marcacci
Arturo, Italian physiologist, 1854–1915. See M. muscle.

Marchand
Felix J., German pathologist, 1846–1928. See M. adrenals, under adrenal, M. rest, M. wandering cell.

Marchant
Gérard T.J., French surgeon, 1850–1903. See M. zone.

Marchesani
Oswald, 1900–1952. See Weill-M. syndrome.

Marchetti
Andrew A., U.S. obstetrician and gynecologist, 1901–1970. See Marshall-M. test, Marshall-M.-Krantz operation.

Marchi
Vittorio, Italian physician, 1851–1908. See M. fixative, M. reaction, M. stain, M. tract.

Marchiafava
Ettore, Italian pathologist, 1847–1935. See M.-Bignami disease, M.-Micheli anemia, M.-Micheli syndrome.

marcid (mar′sid)
Emaciating; wasting away. [L. marcidus; fr. marceo, to wither]

Marcille
Maurice, 1871–1941. See M. triangle.

marcor (mar′kor)
Obsolete term for marasmus. [L. fr. marceo, to wither]

Marcus Gunn
Robert. See Gunn.

Marek
Josef, Hungarian veterinarian and pathologist, 1868–1952. See M. disease virus.

marenostrin
SYN: pyrin.

Marey
Étienne Jules, French physiologist, 1830–1904. See M. law.

Marfan
Antoine Bernard-Jean, French pediatrician, 1858–1942. See M. disease, M. law, M. syndrome.

marfanoid (mar′fan-oyd)
A term used of those whose phenotype bears a superficial resemblence to that of Marfan syndrome.

Marg
Elwin, U.S. physicist, *1918. See Mackay-M. tonometer.

Margaropus (mar-gar′o-pus)
A genus of ixodid ticks closely resembling Boophilus, but not having festoons or ornamentations; they are characterized by greatly enlarged posterior legs and a prolonged median plate. [G. margaros, pearl oyster, + pous, foot] M. winthemi the one-host South American winter horse tick; it also sometimes attacks cattle and sheep.

margin (mar′jin) [TA]
A boundary, edge, or border, as of a surface or structure. SEE ALSO: border, edge. SYN: margo [TA] . [L. margo, border, edge] acetabular m. [TA] the rim of bone around the acetabulum to which is attached the labrum acetabulare. SYN: limbus acetabuli [TA] , m. of acetabulum [TA] , margo acetabularis&star. m. of acetabulum [TA] SYN: acetabular m.. anterior m. SYN: anterior border. anterior palpebral m. [TA] the anterior edge of the free m. of each eyelid, along close to which the eyelashes are embedded. SYN: limbus anterior palpebrae [TA] , anterior border of eyelids. articular m. SYN: glenoid labrum of scapula. cavity m. the periphery of a filling, the line of junction between a restoration and the external surface of a tooth. cervical m. 1. SYN: gingival m.. 2. termination of a restoration in the gingival area. cervical m. of tooth SYN: neck of tooth. ciliary m. of iris [TA] the peripheral border of the iris attached to the ciliary body. SYN: margo ciliaris iridis [TA] , ciliary border of iris. corneal m. SYN: corneal limbus. costal m. [TA] that portion of the inferior aperture of the thorax formed by the articulated cartilages of the seventh to tenth (false) ribs. SYN: arcus costalis [TA] , costal arch&star, arcus costarum. margins of eyelids SYN: palpebral margins. falciform m. of saphenous opening [TA] the sharply curved, free m. of the saphenous opening in the fascia lata; medially, it ends in a superior and an inferior horn. SYN: margo falciformis hiatus sapheni [TA] , margo arcuatus hiatus sapheni&star. fibular m. of foot SYN: lateral border of foot. m. of fossa ovalis SYN: limbus fossae ovalis. free m. SYN: free border. free m. of eyelids the unattached inferior edge of the upper lid and superior edge of the lower lid, where the anterior (cutaneous) surface of the eyelid meets the posterior (conjunctival) surface of the eyelid. The free margins of the eyelids bound the rima palpebrarum, and each free m. has an anterior and posterior m.. SEE ALSO: palpebral margins. frontal m. SYN: frontal border. frontal m. of sphenoid [TA] the m. of the greater wing of the sphenoid bon that articulates with the frontal bone. SYN: margo frontalis ossis sphenoidalis [TA] , frontal border of sphenoid bone. gingival m. 1. the most coronal portion of the gingiva surrounding the tooth; 2. the edge of the free gingiva. SYN: cervical m. (1) , gingival crest. incisal m. [TA] the part of an anterior tooth farthest from the apex of the root. SYN: margo incisalis [TA] , cutting edge (2) , incisal edge, incisal surface, shearing edge. inferior m. SYN: inferior border. inferolateral m. SYN: inferolateral m. of cerebral hemisphere. inferolateral m. of cerebral hemisphere [TA] the irregular, discontinuous m. of the cerebral hemisphere at the junction of the inferior and superolateral surfaces. SYN: margo inferolateralis [TA] , inferolateral m., margo inferior cerebri. inferomedial m. of cerebral hemisphere [TA] the irregular border of the cerebral hemisphere at the junction of the inferior and medial surfaces. SYN: margo inferomedialis hemispherii cerebri [TA] , margo medialis cerebri. infraorbital m. the inferior half of the orbital rim, or the lower border of the orbital opening, formed by the maxilla medially and the zygomatic bone laterally. See orbital m.. SYN: margo infraorbitalis. interosseous m. SYN: interosseous border. lacrimal m. of maxilla [TA] the m. of the nasal surface of the maxilla that articulates with the lacrimal bone. SYN: margo lacrimalis maxillae [TA] , lacrimal border of maxilla. lambdoid m. of occipital bone SYN: lambdoid border of occipital bone. lateral m. SYN: lateral border. mastoid m. of occipital bone SYN: mastoid border of occipital bone. medial m. SYN: medial border. mesovarian m. of ovary SYN: mesovarian border of ovary. nasal m. of frontal bone [TA] the border of the frontal bone that articulates with the nasal bones. SYN: margo nasalis ossis frontalis [TA] , nasal border of frontal bone. occipital m. SYN: occipital border. occipital m. of temporal bone [TA] that part of the temporal bone that articulates with the occipital squama. SYN: margo occipitalis ossis temporalis [TA] , occipital border of temporal bone. m. of orbit SYN: orbital m.. orbital m. [TA] the mostly sharp edge of the orbital opening which is the peripheral border of the base of the pyramid-shaped orbit. The superior half of the orbital rim is the supraorbital m.; the inferior half is the infraorbital m.. The frontal, maxillary, and zygomatic bones contribute to the orbital rim, which is generally strong to protect the orbital contents. Weak, potential fracture sites of the rim coincide with the sutures between the participating bones. SYN: margo orbitalis [TA] , m. of orbit, orbital rim. orbital m. of eyelids the outer or peripheral attached borders of the upper and lower eyelids; the “root” of the eyelids, along which it is attached to the orbital rim. palpebral margins [TA] the anterior and posterior edges of the free m. of the upper and lower eyelids. SEE ALSO: anterior palpebral m., posterior palpebral m.. SYN: limbi palpebrales [TA] , margo palpebrae [TA] , borders of eyelids, margins of eyelids. parietal m. SYN: parietal border. parietal m. of frontal bone [TA] the m. of the frontal bone that articulates with the parietal bone. SYN: margo parietalis ossis frontalis [TA] , parietal border of frontal bone. parietal m. of greater wing of sphenoid [TA] the m. of the greater wing of the sphenoid that articulates with the parietal bone. SYN: margo parietalis alaris majoris ossis sphenoidalis [TA] , margo parietalis ossis sphenoidalis, parietal border of sphenoid bone. posterior palpebral m. [TA] the posterior edge of the free m. of each eyelid, which is also the border of the conjunctiva. SYN: posterior border of eyelids. psoas m. in abdominal radiography, the appearance of the fat stripe delineating the lateral m. of the psoas muscle shadow; shows a normal retroperitoneum when visible. pupillary m. of iris [TA] the inner border of the iris that forms the edge of the pupil. SYN: margo pupillaris iridis [TA] , pupillary border of iris. right m. of heart SYN: right border of heart. m. of safety the range between the minimal therapeutic dose and the minimal toxic dose of a drug. sphenoidal m. of temporal bone [TA] the part of the border of the squamous part of the temporal bone that articulates with the greater wing of the sphenoid. SYN: margo sphenoidalis ossis temporalis [TA] , sphenoidal border of temporal bone. squamosal m. squamosal m. of greater wing of sphenoid [TA] the m. of the greater wing of the sphenoid bone that articulates with the squamous part of the temporal bone. SYN: margo squamosus alaris majoris ossis sphenoidalis [TA] , margo squamosus ossis sphenoidalis, squamous border of sphenoid bone. squamous m. SYN: squamosal border. superior m. of cerebral hemisphere [TA] the curved m. of the cerebral hemisphere at the junction of the superolateral and medial surfaces. SYN: margo superior hemispherii cerebri [TA] , margo superomedialis, superomedial m.. superomedial m. SYN: superior m. of cerebral hemisphere. supraorbital m. [TA] the superior half of the orbital rim, which constitutes the curved superior border of the orbital opening, formed by the frontal bone. See orbital m.. SYN: margo supraorbitalis [TA] , supraorbital arch, supraorbital ridge. m. of tongue [TA] the lateral border that separates the dorsum from the inferior surface of the tongue on each side, the two borders meeting anteriorly at the apex. SYN: margo linguae [TA] . ulnar m. of forearm SYN: ulnar border of forearm. zygomatic m. of greater wing of sphenoid bone the border of the greater wing of the sphenoid that articulates with the zygomatic bone. SYN: margo zygomaticus alaris majoris ossis sphenoidalis [TA] , margo zygomaticus alae majoris, zygomatic border of greater wing of sphenoid bone.

marginal (mar′ji-nal)
Relating to a margin.

Marginal Line Calculus Index (MLC)
An index which scores supragingival calculus found in cervical areas paralleling marginal gingiva.

margination (mar′ji-na′shun)
A phenomenon that occurs during the relatively early phases of inflammation; as a result of dilation of capillaries and slowing of the bloodstream, leukocytes tend to occupy the periphery of the cross-sectional lumen and adhere to the endothelial cells that line the vessels. m. of placenta placenta marginata.

margines (mar′ji-nez)
Plural of margo. [L.]

margo, gen. marginis, pl .margines (mar′go, mar′ji-nis, -nez) [TA]
SYN: margin, border. [L.] m. acetabularis acetabular margin. m. anterior [TA] SYN: anterior border. m. anterior corporis pancreatis [TA] SYN: anterior border of body of pancreas. m. anterior fibulae [TA] SYN: anterior border of fibula. m. anterior pancreatis SYN: anterior border of body of pancreas. m. anterior pulmonis [TA] SYN: anterior border of lung. m. anterior radii [TA] SYN: anterior border of radius. m. anterior testis [TA] SYN: anterior border of testis. m. anterior tibiae [TA] SYN: anterior border of tibia. m. anterior ulnae [TA] SYN: anterior border of ulna. m. arcuatus hiatus sapheni falciform margin of saphenous opening. m. ciliaris iridis [TA] SYN: ciliary margin of iris. m. dexter cordis [TA] SYN: right border of heart. m. falciformis hiatus sapheni [TA] SYN: falciform margin of saphenous opening. m. fibularis pedis lateral border of foot. m. frontalis [TA] SYN: frontal border. m. frontalis ossis parietalis [TA] SYN: frontal border of parietal bone. m. frontalis ossis sphenoidalis [TA] SYN: frontal margin of sphenoid. m. incisalis [TA] SYN: incisal margin. m. inferior [TA] SYN: inferior border. m. inferior cerebri SYN: inferolateral margin of cerebral hemisphere. m. inferior corporis pancreatis [TA] SYN: inferior border of body of pancreas. m. inferior corporis splenis SYN: inferior border of body of pancreas. m. inferior hepatis [TA] SYN: inferior border of liver. m. inferior pancreatis SYN: inferior border of body of pancreas. m. inferior pulmonis [TA] SYN: inferior border of lung. m. inferior splenis [TA] SYN: inferior border of spleen. m. inferolateralis [TA] SYN: inferolateral margin of cerebral hemisphere. m. inferomedialis hemispherii cerebri [TA] SYN: inferomedial margin of cerebral hemisphere. m. infraorbitalis SYN: infraorbital margin. m. interosseus [TA] SYN: interosseous border. m. interosseus fibulae [TA] SYN: interosseous border of fibula. m. interosseus radii [TA] SYN: interosseous border of radius. m. interosseus tibiae [TA] SYN: interosseous border of tibia. m. interosseus ulnae [TA] SYN: interosseous border of ulna. m. lacrimalis maxillae [TA] SYN: lacrimal margin of maxilla. m. lambdoideus ossis occipitalis [TA] SYN: lambdoid border of occipital bone. m. lambdoideus squamae occipitalis SYN: lambdoid border of occipital bone. m. lateralis [TA] SYN: lateral border. m. lateralis antebrachii radial border of forearm. m. lateralis humeri [TA] SYN: lateral border of humerus. m. lateralis pedis [TA] SYN: lateral border of foot. m. lateralis renis [TA] SYN: lateral border of kidney. m. lateralis scapulae [TA] SYN: lateral border of scapula. m. lateralis unguis [TA] SYN: lateral border of nail. m. liber [TA] SYN: free border. m. liber ovarii [TA] SYN: free border of ovary. m. liber unguis [TA] SYN: free border of nail. m. linguae [TA] SYN: margin of tongue. m. mastoideus ossis occipitalis [TA] SYN: mastoid border of occipital bone. m. mastoideus squamae occipitalis SYN: mastoid border of occipital bone. m. medialis [TA] SYN: medial border. m. medialis antebrachii ulnar border of forearm. m. medialis cerebri SYN: inferomedial margin of cerebral hemisphere. m. medialis glandulae suprarenalis [TA] SYN: medial border of suprarenal gland. m. medialis humeri [TA] SYN: medial border of humerus. m. medialis pedis [TA] SYN: medial border of foot. m. medialis renis [TA] SYN: medial border of kidney. m. medialis scapulae [TA] SYN: medial border of scapula. m. medialis tibiae [TA] SYN: medial border of tibia. m. mesovaricus ovarii SYN: mesovarian border of ovary. m. nasalis ossis frontalis [TA] SYN: nasal margin of frontal bone. m. occipitalis [TA] SYN: occipital border. m. occipitalis ossis parietalis [TA] SYN: occipital border of parietal bone. m. occipitalis ossis temporalis [TA] SYN: occipital margin of temporal bone. m. occultus unguis [TA] SYN: hidden border of nail. m. orbitalis [TA] SYN: orbital margin. m. palpebrae [TA] SYN: palpebral margins, under margin. m. parietalis [TA] SYN: parietal border. m. parietalis alaris majoris ossis sphenoidalis [TA] SYN: parietal margin of greater wing of sphenoid. m. parietalis ossis frontalis [TA] SYN: parietal margin of frontal bone. m. parietalis ossis sphenoidalis SYN: parietal margin of greater wing of sphenoid. m. parietalis ossis temporalis SYN: parietal border of squamous part of temporal bone. m. parietalis partis squamosae ossis temporalis [TA] SYN: parietal border of squamous part of temporal bone. m. posterior fibulae [TA] SYN: posterior border of fibula. m. posterior partis petrosae ossis temporalis [TA] SYN: posterior border of petrous part of temporal bone. m. posterior radii [TA] SYN: posterior border of radius. m. posterior testis [TA] SYN: posterior border of testis. m. posterior ulnae [TA] SYN: posterior border of ulna. m. pupillaris iridis [TA] SYN: pupillary margin of iris. m. radialis antebrachii [TA] SYN: radial border of forearm. m. sagittalis ossis parietalis [TA] SYN: sagittal border of parietal bone. m. sphenoidalis ossis temporalis [TA] SYN: sphenoidal margin of temporal bone. m. squamosus [TA] SYN: squamosal border. m. squamosus alaris majoris ossis sphenoidalis [TA] SYN: squamosal margin of greater wing of sphenoid. m. squamosus ossis parietalis [TA] SYN: squamosal border of parietal bone. m. squamosus ossis sphenoidalis SYN: squamosal margin of greater wing of sphenoid. m. superior corporis pancreatis [TA] SYN: superior border of body of pancreas. m. superior glandulae suprarenalis [TA] SYN: superior border of suprarenal gland. m. superior hemispherii cerebri [TA] SYN: superior margin of cerebral hemisphere. m. superior pancreatis SYN: superior border of body of pancreas. m. superior partis petrosae ossis temporalis [TA] SYN: superior border of petrous part of temporal bone. m. superior scapulae [TA] SYN: superior border of scapula. m. superior splenis [TA] SYN: superior border of spleen. m. superomedialis SYN: superior margin of cerebral hemisphere. m. supraorbitalis [TA] SYN: supraorbital margin. m. tibialis pedis medial border of foot. m. ulnaris antebrachii [TA] SYN: ulnar border of forearm. m. uteri [TA] SYN: border of uterus. m. zygomaticus alae majoris SYN: zygomatic margin of greater wing of sphenoid bone. m. zygomaticus alaris majoris ossis sphenoidalis [TA] SYN: zygomatic margin of greater wing of sphenoid bone.

Marie
Pierre, French neurologist, 1853–1940. See M. ataxia, Charcot-M.-Tooth disease, Bamberger-M. disease, Bamberger-M. syndrome, M.-Strümpell disease, Strümpell-M. disease, Brissaud-M. syndrome, Foix-Cavany-M. syndrome.

marihuana (mar-i-wah′na)
Popular name for the dried flowering leaves of Cannabis sativa, which are smoked as cigarettes, “joints,” or “reefers.” In the U.S. m. includes any part of, or any extracts from, the female plant. Alternative spellings are mariguana, marijuana. SEE ALSO: cannabis. [fr. Sp. Maria-Juana, Mary-Jane]

Marinesco
Georges, Roumanian neurologist, 1863–1938. See M. succulent hand, M.-Garland syndrome, M.-Sjögren syndrome.

marinobufotoxin (mar′i-no-boo′fo-toks-in)
A poison produced by the parotid gland of Bufo marinus (family Bufonidae), a large toad native to Central and South America; used in tropical countries for insect control.

Marion
Georges, French urologist, 1869–1932. See M. disease.

Mariotte
Edmé, French physicist, 1620–1684. See M. bottle, M. experiment, M. law, M. blind spot.

mariposia (mar-i-po′ze-a)
Thallasoposia;rarely used term for abnormal consumption of sea water as a result of psychogenic factors. SYN: thalassoposia. [L. mare, the sea, + G. posis, drinking]

Marjolin
Jean N., French physician, 1780–1850. See M. ulcer.

marjoram (mar′jo-ram)
Sweet, leaf, or garden m. whose leaves, with and without a small portion of the flowering tops of Majorana hortensis (Origanum majorana) (family Labiatae), are used as seasoning and medicinally as a stimulant, carminative, and emmenagogue.




A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

. . . Feedback