nit

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nit

 [nit]
the egg of a louse.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

nit

(nit),
1. The ovum or hatched egg of a body, head, or crab louse; the egg is attached to human hair or clothing by a layer of chitin.
2. A unit of luminance; a luminous intensity of 1 candela per square meter of orthogonally projected surface.
[A.S. knitu]
Farlex Partner Medical Dictionary © Farlex 2012

nit

(nĭt)
n.
The egg of certain parasitic insects, especially a head louse.

nit′ty adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
Medical entomology An empty louse egg shell, deposited by Pediculus capitis, P corporis, Phthirus pubis—‘crabs’. See Louse
Physics nt A unit of luminance—photometric brightness equal to 1 candela/m2
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

nit

Medical entomology An empty louse egg shell, deposited by Pediculus capitis, P corporis, Phthirus pubis–'crabs'. See Louse.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

nit

(nit)
1. The ovum of a body, head, or crab louse; it is attached to human hair or clothing by a layer of chitin.
2. A unit of luminance; a luminous intensity of 1 candela per square meter of orthogonally projected surface.
[A.S. knitu]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

nit

A louse egg. Each egg is glued to the shaft of a hair very close to the skin surface. Most nits will not be removed by combing unless this fact is borne in mind. Nit-picking is not recommended.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

nit

the egg of the human louse Pediculus humanus which is found attached to hair.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

candela per square metre 

SI unit of luminance. Syn. nit. Symbol: cd/m2. See luminance; SI unit.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann