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Medical Dictionary


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maxillectomy (mak-sil-ek′to-me)
Resection of the maxilla. [maxilla + G. ektome, excision]

maxillitis (mak′si-li′tis)
Inflammation of the maxilla.

maxillodental (mak-sil′o-den′tal)
Relating to the upper jaw and its associated teeth.

maxillofacial (mak-sil′o-fa′shal)
Pertaining to the jaws and face, particularly with reference to specialized surgery of this region.

maxillojugal (mak-sil′o-joo′gal)
Relating to the maxilla and the zygomatic bone.

maxillomandibular (mak-sil′o-man-dib′u-lar)
Relating to the upper and lower jaws.

maxillopalatine (mak-sil′o-pal′a-tin)
Relating to the maxilla and the palatine bone.

maxillotomy (mak-si-lot′o-me)
Surgical sectioning of the maxilla to allow movement of all or a part of the maxilla into the desired portion. [maxilla + G. tome, incision]

maxilloturbinal (mak-sil′lo-ter′bi-nal)
Relating to the inferior nasal concha.

Maximow
Alexander A., Russian physician in U.S., 1874–1928. See M. stain for bone marrow.

maximum (mak′si-mum)
The greatest amount, value, or degree attained or attainable. [L. neuter of maximus, greatest] glucose transport m. the maximal rate of reabsorption of glucose from the glomerular filtrate; it amounts to approximately 320 mg/min in humans. transport m. (Tm) the maximal rate of secretion or reabsorption of a substance by the renal tubules. SYN: tubular m.. tubular m. (Tm) SYN: transport m..

May
Richard, German physician. See M.-Hegglin anomaly.

May apple
SYN: podophyllum.

Mayer
Paul, German histologist, 1848–1923. See M. hemalum stain, M. mucicarmine stain, M. mucihematein stain.

Mayer
Karl, Austrian neurologist, 1862–1932. See M. reflex.

Mayer
Karl, W., German gynecologist, 1795–1868. See M. pessary, M.-Rokitansky-Küster-Hauser syndrome.

May-Grünwald stain
See under stain.

mayidism (ma′id-izm)
SYN: pellagra. [Zea mays, maize]

Mayo
Charles H., U.S. surgeon, 1865–1939. See M. bunionectomy.

Mayo
William J., U.S. surgeon, 1861–1939. See M. operation, M. vein.

Mayo-Robson
Sir Arthur W., British surgeon, 1853–1933. See Mayo-Robson point, Mayo-Robson position.

Mayou
Marmaduke Stephen, British ophthalmologist, 1876–1934. See Batten-M. disease.

mazamorra (maz-a-mor′a)
Name given in Puerto Rico to a dermatitis caused by penetration of the skin by hookworm larvae.

maze (maz)
A labyrinth; frequently used to study higher functions of the nervous system in rats. [M.E. masen, to confuse]

mazindol (ma′zin-dol)
An isoindole anorexiant that is distinctive in not having the phenethylamine chain common to sympathomimetic amines.

mazo-
The breast. SEE ALSO: masto-. [G. mazos]

Mazzoni
Vittorio, Italian physician, 1880–1940. See M. corpuscle, Golgi-M. corpuscle.

Mazzotti
Luigi, Mexican physician specializing in tropical medicine in mid-20th century. See M. reaction, M. test.

Mb, MbCO, MbO2
myoglobin and its combinations with CO and O2 (oxymyoglobin), respectively.

MBC
Abbreviation for maximum breathing capacity.

M.C.
Abbreviation for Magister Chirurgiae, Master of Surgery; Medical Corps.

mc
Former abbreviation for millicurie.

MCAD
Abbreviation for medium-chain acyl-CoA dehydrogenase.

McArdle
Brian, 20th century British neurologist. See M. disease, M.-Schmid-Pearson disease, M. syndrome.

McBurney
Charles, U.S. surgeon, 1845–1913. See M. incision, M. point, M. sign.

McCall
M.L., 20th century U.S. gynecologist. See M. culdoplasty procedure.

McCarthy
Daniel J., U.S. neurologist, 1874–1958. See M. reflexes, under reflex.

McClintock
Barbara, 1902–1992, 1993 Nobel Prize winner for her work in the genetics of corn.

McCrea
Lowrain E., U.S. urologist, *1896. See M. sound.

McCune
Donovan James, U.S. pediatrician, 1902–1976. See M.-Albright syndrome.

McDonald
Ellice, U.S. gynecologist, 1876–1955. See M. maneuver.

McGoon
Dwight C., U.S. surgeon, *1925. See M. technique.

MCH
Abbreviation for mean corpuscular hemoglobin.

M.Ch.
Abbreviation for Magister Chirurgiae, Master of Surgery.

MCHC
Abbreviation for mean corpuscular hemoglobin concentration.

mCi
Abbreviation for millicurie.

McKee
George Kenneth, British orthopedic surgeon, *1930. See M. line.

McKusick
Victor Almon, U.S. physician, *1921. See M. metaphyseal dysplasia.

McLean
Malcolm, U.S. obstetrician, 1848–1924. See Tucker-M. forceps.

MCMI
Abbreviation for Millon clinical multiaxial inventory.

McMurray
Thomas P., British surgeon, 1887–1949. See M. test.

m-cone
Middle wavelength sensitive cone (green cone).

MCP-1
Abbreviation for monocyte chemoattractant protein-1.

McPhail
M.K., Canadian physiologist, *1907. See M. test.

MCR
Abbreviation for steroid metabolic clearance rate.

McReynolds
John O., U.S. ophthalmologist, 1865–1942.

M-CSF
Abbreviation for macrophage colony-stimulating factor.

MCV
Abbreviation for mean corpuscular volume.

McVay
Chester B., U.S. surgeon, *1911. See M. operation.

MD
Abbreviation for methyldichloroarsine.

M.D.
Abbreviation of Medicinae Doctor, Doctor of Medicine.

Md
Symbol for mendelevium.

MDF
Abbreviation for myocardial depressant factor.

m. dict.
Abbreviation for [L] more dicto, as directed.

MDMA
A centrally active phenethylamine derivative related to amphetamine and methamphetamine, with central nervous system excitant and hallucinogenic properties. SYN: 3,4-methylenedioxymethamphetamine.

MDNCF
Abbreviation for monocyte-derived neutrophil chemotactic factor.

M'Dowel
Benjamin G., Irish anatomist, 1829–1885. See frenulum of M..

M.D.S.
Abbreviation of Master of Dental Surgery.

Me
Symbol for methyl.

Meadows
William Robert, U.S. cardiologist, *1919. See M. syndrome.

meal (mel)
1. The food consumed at regular intervals or at a specified time. 2. Ground flour from a grain. Boyden m. a m. consisting of three or four egg yolks, beaten up in milk and seasoned with sugar, port wine, etc., used to test the evacuation time of the gallbladder; two-thirds to three-quarters of the contents will be normally evacuated within 40 minutes. Lundh m. a m. of skimmed milk powder mixed with corn oil and dextrose used to assess pancreatic function. test m. 1. toast and tea, or crackers and tea, or gruel or other bland food, given to stimulate gastric secretion before withdrawing gastric contents for analysis; 2. administration of food containing a substance thought to be responsible for symptoms, such as an allergic reaction.

mean (men)
A statistical measurement of central tendency or average of a set of values, usually assumed to be the arithmetic m. unless otherwise specified. [M.E., mene fr. O.Fr., fr. L. medianus, in the middle] arithmetic m. the m. calculated by adding a set of values and then dividing the sum by the number of values. geometric m. the m. calculated as the antilogarithm of the arithmetic m. of the logarithms of the individual values; it can also be calculated as the nth root of the product of n values. harmonic m. the m. calculated as the number of values being averaged, divided by the sum of their reciprocals. regression of the m. if, for a symmetrical population with a single mode, a measurement, selected because it is extreme, is repeated, on average the second reading will be closer to the m. than the first. standard error of the m. (SEM) a statistical index of the probability that a given sample m. is representative of the m. of the population from which the sample was drawn.




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