nit

1
[ nit ]
/ nɪt /

noun

the egg of a parasitic insect, especially of a louse, often attached to a hair or a fiber of clothing.
the young of such an insect.

Origin of nit

1
before 900; Middle English nite, Old English hnitu, cognate with Dutch neet, German Niss, Norwegian nit

Definition for nit (2 of 3)

nit

2
[ nit ]
/ nɪt /

noun Physics.

a unit of luminous intensity equal to one candela per square meter. Abbreviation: nt

Origin of nit

2
1950–55; extracted from Latin nitor brightness; see nitid, -or1

Definition for nit (3 of 3)

nit

3
[ nit ]
/ nɪt /

noun Chiefly British.

a nitwit.

Origin of nit

3
by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nit

British Dictionary definitions for nit (1 of 5)

nit

1
/ (nɪt) /

noun

the egg of a louse, especially when adhering to human hair
the larva of a louse or similar insect

Word Origin for nit

Old English hnitu; related to Dutch neet, Old High German hniz

British Dictionary definitions for nit (2 of 5)

nit

2
/ (nɪt) /

noun

a unit of luminance equal to 1 candela per square metre

Word Origin for nit

C20: from Latin nitor brightness

British Dictionary definitions for nit (3 of 5)

nit

3
/ (nɪt) /

noun

informal, mainly British short for nitwit

British Dictionary definitions for nit (4 of 5)

nit

4
/ (nɪt) /

noun

a unit of information equal to 1.44 bitsAlso called: nepit

Word Origin for nit

C20: from N (apierian dig) it

British Dictionary definitions for nit (5 of 5)

nit

5
/ (nɪt) /

noun

keep nit Australian informal to keep watch, esp during illegal activity

Word Origin for nit

C19: from nix 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for nit

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.