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nad

[ nad ]
/ næd /
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noun Slang: Vulgar.
Usually nads. a testicle.
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Origin of nad

First recorded in 1960–65; shortening of gonad

Other definitions for nad (2 of 3)

NAD

Biochemistry.
nicotinamide adenine dinucleotide: a coenzyme, C21H27N7O14P2, involved in many cellular oxidation-reduction reactions.

Other definitions for nad (3 of 3)

N.A.D.

abbreviation
National Academy of Design.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use nad in a sentence

British Dictionary definitions for nad

NAD

noun
biochem nicotinamide adenine dinucleotide; a coenzyme that is a hydrogen carrier in metabolic reactions, esp in tissue respirationFormer name: DPN
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

Scientific definitions for nad

NAD
[ ĕn′ā-dē ]

Short for nicotinamide adenine dinucleotide. A coenzyme that occurs in many living cells and functions as an electron acceptor. NAD is used alternately with NADH as an oxidizing or reducing agent in metabolic reactions. Chemical formula: C21H27N7O14P2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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