[ nad ]
/ næd /
noun Slang: Vulgar.
Usually nads. a testicle.
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Origin of nad
First recorded in 1960–65; shortening of gonad
Definition for nad (2 of 3)
nicotinamide adenine dinucleotide: a coenzyme, C21H27N7O14P2, involved in many cellular oxidation-reduction reactions.
Definition for nad (3 of 3)
National Academy of Design.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for nad
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
Medical definitions for nad (1 of 2)
[ ĕn′ā-dē′ ]
Nicotinamide adenine dinucleotide; a coenzyme occurring in most living cells and used as an oxidizing or reducing agent in various metabolic processes.
Medical definitions for nad (2 of 2)
no apparent distress
no appreciable disease
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for 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.