nit

nit

1 [nit]
noun
1.
the egg of a parasitic insect, especially of a louse, often attached to a hair or a fiber of clothing.
2.
the young of such an insect.

Origin:
before 900; Middle English nite, Old English hnitu, cognate with Dutch neet, German Niss, Norwegian nit

Dictionary.com Unabridged

nit

2 [nit]
noun Physics.
a unit of luminous intensity equal to one candela per square meter. Abbreviation: nt

Origin:
1950–55; extracted from Latin nitor brightness; see nitid, -or1

nit

3 [nit]
noun Chiefly British.
a nitwit.

Origin:
by shortening

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
nit1 (nɪt)
 
n
1.  the egg of a louse, especially when adhering to human hair
2.  the larva of a louse or similar insect
 
[Old English hnitu; related to Dutch neet, Old High German hniz]

nit2 (nɪt)
 
n
a unit of luminance equal to 1 candela per square metre
 
[C20: from Latin nitor brightness]

nit3 (nɪt)
 
n
informal chiefly (Brit) short for nitwit

nit4 (nɪt)
 
n
Also called: nepit a unit of information equal to 1.44 bits
 
[C20: from N(apierian dig)it]

nit5 (nɪt)
 
n
informal (Austral) keep nit to keep watch, esp during illegal activity
 
[C19: from nix1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

nit
O.E. hnitu "louse egg, nit," from P.Gmc. *khnito (cf. Norw. nit, M.Du. nete, Du. neet, M.H.G. niz, Ger. Niß), related to Rus., Pol. gnida, Czech knida, Gk. konid-. Verb nit-pick is first attested 1962, from earlier nitpicker "pedantic critic" (1951).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

nit (nĭt)
n.
The egg or young of a parasitic insect, such as a louse.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Abbreviations & Acronyms
NIT
  1. National Intelligence Test

  2. National Invitational Tournament

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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