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Medical Dictionary


mucid (mu′sid)
SYN: muciparous.

muciferous (mu-sif′er-us)
SYN: muciparous.

mucification (mu′si-fi-ka′shun)
A change produced in the vaginal mucosa of spayed experimental animals following stimulation with estrogen; characterized by the formation of tall columnar cells secreting mucus. [L. mucus + facio, to make]

muciform (mu′si-form)
Resembling mucus. SYN: blennoid, mucoid (2) .

mucigenous (mu-sij′e-nus)
SYN: muciparous.

mucihematein (mu-si-he′ma-te-in)
A violet-blue staining fluid containing aluminum chloride and hematein; used to detect connective tissue mucins.

mucilage (mu′si-lij)
A pharmacopeial preparation consisting of a solution in water of the mucilaginous principles of vegetable substances; used as a soothing application to the mucous membranes and in the preparation of official and extemporaneous mixtures. [L. mucilago]

mucilaginous (mu-si-laj′i-nus)
1. Resembling mucilage; i.e., adhesive, viscid, sticky. 2. SYN: muciparous.

mucin (mu′sin)
A secretion containing carbohydrate-rich glycoproteins such as that from the goblet cells of the intestine, the submaxillary glands, and other mucous glandular cells; it is also present in the ground substance of connective tissue, especially mucous connective tissue, is soluble in alkaline water, and is precipitated by acetic acid; mucins act as lubricants and protectants of the linings of body cavities. gastric m. a white or yellowish powder which forms a viscous opalescent fluid with water, prepared from mucosa of hog's stomach by pepsin-hydrochloric acid digestion and precipitation of the supernatant fluid with 60% alcohol; used in peptic ulcer for its protective and lubricating action.

mucinase (mu′si-nas)
A term specifically applied to hyaluronate lyase, hyaluronoglucosaminidase, and hyaluronoglucuronidase (hyaluronidases), but more loosely to any enzyme that hydrolyzes mucopolysaccharide substances (mucins). SYN: mucase, mucopolysaccharidase.

mucinemia (mu-si-ne′me-a)
The presence of mucin in the circulating blood. SYN: myxemia. [mucin + G. haima, blood]

mucinogen (mu′sin-o-jen)
A glycoprotein that forms mucin through the imbibition of water. [mucin + G. -gen, producing]

mucinoid (mu′si-noyd)
1. SYN: mucoid (1) . 2. Resembling mucin.

mucinolytic (mu′si-no-lit′ik)
Capable of bringing about the hydrolysis of mucin, as by a mucinase.

mucinosis (mu-si-no′sis)
A condition in which mucin is present in the skin in excessive amounts, or in abnormal distribution; classified as: metabolic m., diffuse or pretibial myxedema, lichen myxedematosus, gargoylism; secondary m., degeneration in tumors; localized m., follicular, papular, plaquelike, focal, and myxoid or synovial cyst. [mucin + G. -osis, condition] cutaneous focal m. flesh-colored papules of the skin, composed of homogenous mucinous material with scattered fibroblasts. follicular m. a relatively uncommon benign eruption of discrete erythematous lesions progressing to alopecia on the face or scalp, usually in young people, in which there are cystic mucinous changes in the epithelium of hair follicles in the involved area; may also develop in mycosis fungoides. oral focal m. an area of myxomatous connective tissue; the mucosal counterpart of cutaneous focal m.. papular m. SYN: lichen myxedematosus. reticular erythematous m. (REM) SYN: REM syndrome.

mucinous (mu′si-nus)
Relating to or containing mucin. SYN: mucoid (3) .

mucinuria (mu-si-nu′re-a)
The presence of mucin in the urine. [mucin + G. ouron, urine]

muciparous (mu-sip′a-rus)
Producing or secreting mucus. SYN: blennogenic, blennogenous, mucid, muciferous, mucigenous, mucilaginous (2) . [mucin + L. pario, to bring forth, bear]

mucitis (mu-si′tis)
Inflammation of a mucous membrane.

T.J., 20th century Canadian pediatrician. See M.-Wells syndrome.

Mucus, mucous (mucous membrane). SEE ALSO: muci-, myxo-. [L. mucus]

mucocele (mu′ko-sel)
1. SYN: mucous cyst. 2. A retention cyst of the salivary gland, lacrimal sac, paranasal sinuses, appendix, gallbladder, or other site. [muco- + G. kele, tumor, hernia]

mucociliary (mu-ko-sil′e-a-ry)
Related to the interaction of mucus and ciliated epithelium.

mucoclasis (mu-kok′la-sis)
Obsolete term for denudation of any mucous surface. [muco- + G. klasis, a breaking off]

mucocolitis (mu′ko-ko-li′tis)
SYN: mucous colitis.

mucocolpos (mu-ko-kol′pos)
Presence of mucus in the vagina. [muco- + G. kolpos, vagina]

mucocutaneous (mu′ko-ku-ta′ne-us)
Relating to mucous membrane and skin; denoting the line of junction of the two at the nasal, oral, vaginal, and anal orifices. SYN: cutaneomucosal.

mucoenteritis (mu′ko-en-ter-i′tis)
1. Inflammation of the intestinal mucous membrane. 2. SYN: mucomembranous enteritis.

mucoepidermoid (mu′ko-ep-i-der′moyd)
Denoting a mixture of mucus-secreting and epithelial cells, as in m. carcinoma.

mucoglobulin (mu-ko-glob′u-lin)
A glycoprotein or mucoprotein in which the protein component is a globulin.

mucoid (mu′koyd)
1. General term for a mucin, mucoprotein, or glycoprotein. SYN: mucinoid (1) . 2. SYN: muciform. 3. SYN: mucinous. [mucus + G. eidos, appearance]

mucolipidosis, pl .mucolipidoses (mu′ko-lip-i-do′sis, -sez)
Any of a group of lysosomal storage diseases in which symptoms of visceral and mesenchymal mucopolysaccharide, glycoprotein, oligosaccharide, or glycolipid storage are present; clinically, they bear a superficial resemblance to the mucopolysaccharidoses; autosomal recessive inheritance. [muco- + lipid + -osis, condition] m. I [MIM*256550] m. somewhat like a mild form of Hurler syndrome with coarse facial features, macular cherry red spots, myoclonus epilepsy, mild dysostosis multiplex, and moderate mental retardation due to neuraminidase deficiency; autosomal recessive inheritance caused by mutation in the neuraminidase gene (NEU) on 6p. SYN: lipomucopolysaccharidosis. m. II [MIM*252500] a metabolic disorder with onset in early childhood characterized by clinical and radiographic findings similar to those in Hurler syndrome including gum hypertrophy, thoracic dysplasia, congenital hip dislocation, and mental retardation; vacuolated lymphocytes and unusual inclusion bodies in cultured fibroblasts (I-cells) are found; lysosomal enzymes are increased in serum, spinal fluid, and urine; urinary mucopolysaccharides are normal; associated with a deficiency of N-acetylglucosaminyl-1-phosphotransferase; autosomal recessive inheritance. SYN: I-cell disease, inclusion cell disease. m. III [MIM*252600] m. with mild Hurlerlike symptoms, restricted joint mobility, short stature, mild mental retardation, and dysplastic skeletal changes, especially of the hip; aortic and mitral valve disease are often present; associated with a deficiency of N-acetyl-α-glucosaminidase or other enzyme deficiencies such as lysosomal enzyme N-acetylglucosaminyl-1-phosphotransferase in mutant fibroblasts lacks the ability to recognize lysosomal enzymes and specific substrates for phosphorylation; autosomal recessive inheritance. SYN: pseudo-Hurler polydystrophy, pseudopolydystrophy. m. IV [MIM*252650] psychomotor retardation with cloudy corneas and retinal degeneration, with inclusion cells in cultured fibroblasts; the pathogenesis is uncertain; autosomal recessive inheritance.

mucolysis (mu-kol′i-sis)
The solution, digestion, or liquefaction of mucus. [muco- + G. lysis, dissolution]

mucolytic (mu-ko-lit′ik)
Capable of dissolving, digesting, or liquefying mucus.

mucomembranous (mu′ko-mem′bra-nus)
Relating to a mucous membrane.

mucopeptide (mu-ko-pep′tid)
1. A peptide found in combination with polysaccharides containing muramic or sialic acids. 2. SYN: peptidoglycan. m. glycohydrolase SYN: lysozyme.

mucoperiosteal (mu′ko-per-e-os′te-al)
Relating to mucoperiosteum.

mucoperiosteum (mu′ko-per-e-os′te-um)
Mucous membrane and periosteum so intimately united as to form practically a single membrane, as that covering the hard palate.

mucopolysaccharidase (mu′ko-pol-e-sak′a-ri-das)
SYN: mucinase, β-d-glucuronidase deficiency.

mucopolysaccharide (mu′ko-pol-e-sak′a-rid)
General term for a protein-polysaccharide complex obtained from proteoglycans and containing as much as 95% polysaccharide; mucopolysaccharides include the blood group substances. A more modern term is glycosaminoglycan, as all of the known six classes contain major amounts of d-glucosamine and d-galactosamine.

mucopolysaccharidosis, pl .mucopolysaccharidoses (mu′ko-pol-e-sak′a-ri-do′sis, -sez)
Any of a group of lysosomal storage diseases that have in common a disorder in metabolism of mucopolysaccharides, as evidenced by excretion of various mucopolysaccharides in urine and infiltration of these substances into connective tissue, with resulting various defects of bone, cartilage, connective tissue, and other organs. type IH m. SYN: Hurler syndrome. type I H/S m. SYN: Hurler-Scheie syndrome. type II m. SYN: Hunter syndrome. type III m. SYN: Sanfilippo syndrome. type IS m. SYN: Scheie syndrome. type IVA, B m. SYN: Morquio syndrome. type V m. former designation for Scheie syndrome. type VI m. SYN: Maroteaux-Lamy syndrome. type VII m. 1. SYN: Sly syndrome. 2. SYN: Di Ferrante syndrome.

mucopolysacchariduria (mu′ko-pol-e-sak′a-ri-doo′re-a)
The excretion of mucopolysaccharides in the urine.

mucoprotein (mu-ko-pro′ten)
General term for a protein-polysaccharide complex, usually implying that the protein component is the major part of the complex, in contradistinction to mucopolysaccharide; mucoproteins include the α1- and α2-globulins of serum (and others). Sometimes called glycoproteins, although this term usually refers to those mucoproteins containing less than 4% carbohydrate. Tamm-Horsfall m. the matrix of urinary casts derived from the secretion of renal tubular cells.

mucopurulent (mu-ko-poo′roo-lent)
Pertaining to an exudate that is chiefly purulent (pus), but containing relatively conspicuous proportions of mucous material. SYN: puromucous.

mucopus (mu′ko-pus)
A mucopurulent discharge; a mixture of mucous material and pus. SYN: mycopus.

Mucor (mu′kor)
A genus of fungi (class Zygomycetes, family Mucoraceae), most species of which are saprobic; several are pathogenic and may cause zygomycosis in humans.

Mucoraceae (mu′kor-a′se-e)
A family of fungi (class Zygomycetes) comprising terrestrial, aquatic, and sometimes parasitic organisms; includes the genera Mucor, Absidia, Rhizopus, Rhizomucor, Apophysomyces, and Mortierella. Although the various species of the genera are ordinarily saprobic, free-living forms, some of them cause mucormycosis in humans. [L. mucor, mold]

Mucorales (moo-kor-al′ez)
An order of the fungal class Zygomycetes that contains all the species causing mucormycosis in humans. The genera include Cunninghamella, Rhizopus, Absidia, Rhlizomucor, Mucor, Apophysomyces, Saksenaea, Syncepthalastrum, and Cokeromyces. Mortierella species are included but are of doubtful pathogenicity for humans.

mucormycosis (mu′kor-mi-ko′sis)
Infection with fungi of the order Mucorales; to be distinguished from zygomycosis, a broader term that includes infections caused by fungi of the order Entomophthorales.

mucosa (mu-ko′sa) [TA]
A mucous tissue lining various tubular structures, consisting of epithelium, lamina, propria, and, in the digestive tract, a layer of smooth muscle (muscularis mucosae). SYN: tunica m. [TA] , mucous membranes&star, membrana m., mucosal tunics, mucous tunics. [L. fem. of mucosus, mucous] alveolar m. the mucous membrane apical to the attached gingiva. m. of bronchi [TA] the inner coat of a bronchus. SYN: tunica m. bronchi [TA] , mucous membrane of bronchus&star, bronchial m.. bronchial m. SYN: m. of bronchi. m. of colon the lining coat of the colon. SYN: tunica m. coli. m. of ductus deferens [TA] the inner layer of the ductus deferens. SYN: tunica m. ductus deferentis [TA] , mucous membrane of ductus deferens&star. esophageal m. SYN: m. of esophagus. m. of esophagus [TA] the inner coat of the esophagus. SYN: tunica m. esophagi [TA] , mucous membrane of esophagus&star, esophageal m.. m. of female urethra [TA] the inner mucosal layer of the female urethra. SYN: tunica m. urethrae femininae [TA] , mucous membrane of female urethra&star. m. of gallbladder [TA] the inner coat of the gallbladder. SYN: tunica m. vesicae biliaris [TA] , mucous membrane of gallbladder&star, tunica m. vesicae felleae&star. gastric m. SYN: m. of stomach. gingival m. that portion of the oral mucous membrane that covers and is attached to the necks of the teeth and the alveolar process of the jaws; it is demarcated from lining m. on the facial aspect by a clearly defined line which marks the mucogingival junction, and, in contrast to the lining m., is keratinized and lighter in color; on the palatal surface, the gingiva blends imperceptibly with the palatal m.. m. of large intestine [TA] the mucosal lining (epithelium, lamina propria, and muscularis mucosae) of the wall of all the parts of the large intestine (cecum, colon, rectum, and anal canal) collectively. SYN: tunica m. intestini crassi [TA] , mucous membrane of large intestine&star. laryngeal m. SYN: m. of larynx. m. of larynx [TA] the mucous coat of the larynx. SYN: tunica m. laryngis [TA] , mucous membrane of larynx&star, laryngeal m.. lingual m. SYN: m. of tongue. m. of male urethra [TA] innermost layer of urethra including an epithelium typical of the urinary tract (a transitional epithelium or urothelium) proximal to the openings of the ejaculatory ducts and typical of the genital tract (a stratified columnar epithelium) distally that continues through the intermediate and most of the spongy urethra, changing again to a stratified squamous epithelium in the region of the navicular fossa; many recesses occur in the m. of the spongy portion that continue into tubular, branching mucous glands. SYN: tunica urethrae masculinae [TA] , mucous membrane of male urethra. m. of mouth [TA] the mucous membrane of the oral cavity, including the gingiva. SYN: oral m. [TA] , tunica m. oris [TA] . nasal m. SYN: m. of nose. m. of nose [TA] the lining of the nasal cavity, it is continuous with the skin in the vestibule of the nose and with the m. of the nasopharynx, the paranasal sinuses, and the nasolacrimal duct and contains goblet cells; it is subdivided into the olfactory region and respiratory region. SYN: tunica m. nasi [TA] , mucous membrane of nose&star, membrana pituitosa, nasal m., pituitary membrane, schneiderian membrane. olfactory m. SYN: olfactory region of m. of nose. oral m. [TA] SYN: m. of mouth. pharyngeal m. SYN: m. of pharynx. m. of pharyngotympanic (auditory) tube [TA] the lining coat of the auditory tube. SYN: tunica m. tubae auditivae [TA] , mucous membrane of pharyngotympanic auditory tube&star, tunica m. tubae auditoriae. m. of pharynx [TA] the mucous coat of the pharynx. SYN: tunica m. pharyngis [TA] , mucous membrane of pharynx, pharyngeal m.. m. of renal pelvis [TA] innermost of three layers of the wall of the renal pelvis, identical in structure to that of the ureter, that is, consisting of a transitional epithelium (urothelium) and an underlying lamina propria. SYN: tunica m. pelvis renalis [TA] . respiratory m. pseudostratified ciliated columnar epithelium with goblet cells and a lamina propria containing, in addition to connective tissue, numerous seromucous glands and in some regions many thin-walled veins that line the airways; it includes the respiratory region of the nasal m. [TA] (pars respiratoria tunicae mucosae nasi [TA]), m. of the trachea [TA] (tunica m. tracheae [TA]), and m. of bronchi [TA] (tunica m. bronchi [TA]). See respiratory region of m. of nasal cavity. m. of seminal gland [TA] the mucous membrane lining the seminal gland (vesicle). SYN: tunica m. vesiculae seminalis&star, m. of seminal vesicle. m. of seminal vesicle SYN: m. of seminal gland. m. of small intestine [TA] the mucous coat of the small intestine. SYN: tunica m. intestini tenuis [TA] , mucous membrane of small intestine&star. m. of stomach [TA] the mucous layer of the stomach. SYN: tunica m. gastrica [TA] , mucous membrane of stomach&star, gastric m.. m. of tongue [TA] the m. forming the surface of the tongue; that of the dorsum of the tongue appears velvety due to the presence of vast numbers of papillae; that of the inferior surface is smooth and thinner. SYN: tunica m. linguae [TA] , mucous membrane of tongue&star, lingual m.. m. of trachea [TA] the inner mucous layer of the trachea. SYN: tunica m. tracheae [TA] , mucous membrane of trachea&star, tracheal m.. tracheal m. SYN: m. of trachea. m. of tympanic cavity [TA] the mucosal lining of the tympanic cavity and the structures in it. SYN: tunica m. cavitatis tympani [TA] , mucous membrane of tympanic cavity&star. m. of ureter [TA] the inner mucosal layer of the ureter. SYN: tunica m. ureteris [TA] , mucous membrane of ureter&star. m. of urethra [TA] m. of female urethra, m. of male urethra. m. of (urinary) bladder [TA] the inner coat of the urinary bladder. SYN: tunica m. vesicae urinariae [TA] , mucous membrane of urinary bladder&star. m. of uterine tube [TA] the inner mucosal layer of the uterine tube. SYN: tunica m. tubae uterinae [TA] , mucous membrane of uterine tube&star. m. of vagina [TA] the mucosal layer of the vagina. SYN: tunica m. vaginae [TA] , mucous membrane of vagina&star, vaginal m.. vaginal m. SYN: m. of vagina.

mucosal (mu-ko′sal)
Relating to the mucosa or mucous membrane.

mucosanguineous, mucosanguinolent (mu′ko-sang-gwin′e-us, -o-lent)
Pertaining to an exudate or other fluid material that has a relatively high content of blood and mucus. [muco- + L. sanguis, blood]

mucosectomy (mu-ko-sek′to-me)
Excision of the mucosa, usually of the rectum prior to ileoanal anastomosis. [mucosa + G. ektome, excision]

mucoserous (mu-ko-se′rus)
Pertaining to an exudate or secretion that consists of both mucus and serum or a watery component.

mucostatic (mu-ko-stat′ik)
1. Denoting the normal relaxed condition of mucosal tissues covering the jaws. 2. Arresting the secretion of mucus. [muco- + G. stasis, a standing]

mucous (mu′kus)
Relating to mucus or a m. membrane. [L. mucosus, m., fr. mucus]

mucoviscidosis (mu′ko-vis-i-do′sis)
SYN: cystic fibrosis. [myco- + G. toxikon, poison, + -osis, condition]

mucro, pl .mucrones (mu′kro, mu-kro′nez)
A term applied to the pointed extremity of a structure. [L. point, sword] m. cordis obsolete term for apex of heart. m. sterni SYN: xiphoid process.

mucron (mu′kron)
Attachment organelle of aseptate gregarines, similar to an epimerite; the latter is set off from the rest of the gregarine body by a septum.

mucronate (mu′kro-nat)
SYN: xiphoid. [L. mucronatus, pointed]

mucus (mu′kus)
The clear viscid secretion of the mucous membranes, consisting of mucin, epithelial cells, leukocytes, and various inorganic salts dissolved in water. [L.] glairy m. SYN: pituita.

Robert C., 20th century U.S. nephrologist. See M. bands, under band, M. lines, under line, M. sign.

U.S. manufacturer of surgical instruments. See M. electronic tonometer.

Muellerius capillaris (mu-ler′e-us kap-i-la′ris)
One of the most common species of hair lungworms (subfamily Protostrongylinae) of sheep, goats, and deer. It is smaller than Dictyocaulus, inhabits the smaller bronchi and lung parenchyma, and is relatively nonpathogenic to its host.

Acronym for multiple-gated acquisition scan.

Edward G., British surgeon, 1906–1973. See M.-Torre syndrome.

Philip H., English ophthalmologist, 1843–1905. See M. operation.

muliebria (moo′le-e′bre-a)
The female genital organs. [L. neut pl. of muliebris, relating to mulier, a woman]

Friedrich von, German physician, 1858–1941. See M. sign.

Heinrich, German anatomist, 1820–1864. See M. radial cells, under cell, M. fibers, under fiber, M. muscle, M. trigone.

Hermann F., German histologist, 1866–1898. See formol-M. fixative, M. fixative.

Johannes P., German anatomist, physiologist, and pathologist, 1801–1858. See M. capsule, M. duct, M. law, M. maneuver, M. tubercle, müllerian agenesis.

Leopold, Czechoslovakian ophthalmologist, 1862–1936.

Peter, German obstetrician, 1836–1922. See Hillis-M. maneuver.

Walther, 20th century German physicist. See Geiger-M. counter, Geiger-M. tube.

müllerian (mu-ler′e-an)
Attributed to or described by Johannes Müller.


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