Mdn.
Chemistry.
The element mendelevium.The symbol originally proposed was Mv.
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the world > matter > chemistry > elements and compounds > metals > specific elements > mendelevium > [noun]
mendelevium1955
Md1959
1959 Nomencl. Inorg. Chem. (I.U.P.A.C.) 8 (table) Mendelevium... Md... 101.
1968 Bull. Amer. Physical Soc. 13 604/2 Electron capture by 258Md was expected to be the principal mode of decay.
1983 McGraw-Hill Encycl. Chem. 589/2 In each experiment only a few atoms of Md were collected.
This is a new entry (OED Third Edition, March 2001; most recently modified version published online June 2018).
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M.D.
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D. n. = Doctor (in academical degrees, as a Latin word following, and as English preceding, other initials), as D.D. (Divinitatis Doctor), Doctor of Divinity, LL.D. (Legum Doctor), Doctor of Laws, M.D. Doctor of Medicine, Ph.D., Doctor of Philosophy, D.C.L., Doctor of Civil Law, D.Lit., Lit.D., Doctor of Literature, D.Phil., Doctor of Philosophy, D.Sc., Doctor of Science.
MD
MD n. Managing Director.
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1955 R. J. Schwartz Compl. Dict. Abbrev. 110/2 MD; Managing Director.
1963 Times 14 May p. i/4 (advt.) Do give this a little thought and perhaps you might have a word with the Managing Directors of some of the subsidiary companies... Have you talked to the M.D.s about it?
1996 Austral. Financial Rev. 9 Sept. 22/1 (heading) MD takes Amcor to the world.
M.D.
M.D. adj. and n. (also m.d.) mentally deficient; mental defective.
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1942 E. Partridge Dict. Abbrev. 61/1 M.D., mentally deficient.
1968 ‘L. Black’ Outbreak xiv. 137 I just don't see..how the m.d. ward got infected.
1971 Oz May 5/1 He is classified in Orange County..as MDSO (mentally defective sexual offender).
MD
MD n. Musical (or Music) Director.
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society > leisure > the arts > music > musician > conductor or leader > [noun] > conductor
manuductor1728
conductor1787
musical director1818
timekeeper1818
music director1839
band-master1858
MD1926
1926 Melody Maker Apr. 42/3 It's up to the soloist to arrange with the M.D. for the sort of rhythm he feels will best help his effort.
1967 Stage 2 Mar. 3/2 Ernest Woodhouse the MD of Creswell Colliery Band.
2002 CMJ New Music Rep. 2 Sept. 28/2 ‘Ben High, M.D.’.. You think that M.D. stands for being a doctor..but it doesn't... It stands for Music Director.
M.D.
M.D. n. [ < post-classical Latin M.D., graphic abbreviation of medicinae doctor] Doctor of Medicine (see D n. Initialisms 3); (often colloquial) a person holding the degree of M.D., a physician.
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the world > health and disease > healing > healer > physician > [noun]
physician?c1225
leecherc1374
practiserc1387
doctora1400
flesh-leecha1400
leechman14..
mediciner?a1425
miria1425
M.D.1425
medicine?c1450
practitioner?1543
minister1559
doc1563
artist1565
medicus1570
medicianera1578
Aesculapius1586
Dra1593
pisspot1592
medician1597
physicianer1598
medicinary1599
pisspot1600
velvet-cap1602
healer1611
Galena1616
physiner1616
clyster1621
clyster-pipe1622
hakim1623
medic1625
practicant1630
medico1647
physicker1649
physicster1689
Aesculapian1694
nim-gimmer1699
pill-monger1706
medical man1784
meester1812
medical1823
pill-gilder1824
therapeutist1830
pill1835
pill roller1843
med1851
pill-peddler1855
therapeutic1858
squirt1859
medicine man1866
pill pusher1879
therapist1886
doser1888
internist1894
pill-shooter1911
whitecoat1911
quack1919
vet1925
1425 in F. Collins Reg. Freemen York (1897) I. 138 (MED) Thomas Wylton, clericus, M. D., fil. Johannis Wylton, cutler.
1685 (title) Motus Compositi..Written in Latin by Tho. Skinner, M.D.
1766 T. Reid Let. in Wks. I. 47/1 I think our surgeons eclipse our M.D's.
1888 J. H. Mapleson Mem. I. xiv. 209 She gave bonds for her appearance when called upon, in order to save her trunks from seizure, which the M.D. had threatened.
1990 J. Masson Final Anal. (1991) vii. 140 After founding the psychoanalytic institute, he was then forbidden to vote on the grounds that he was not an M.D.
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