[ nad ]

nounSlang: Vulgar.
  1. Usually nads. a testicle.

Origin of nad

First recorded in 1960–65; shortening of gonad

Words Nearby nad

Other definitions for NAD (2 of 3)


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

Other definitions for N.A.D. (3 of 3)


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

How to use nad in a sentence

British Dictionary definitions for NAD


  1. biochem nicotinamide adenine dinucleotide; a coenzyme that is a hydrogen carrier in metabolic reactions, esp in tissue respiration: Former 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


[ ĕn′ā-dē ]

  1. 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.

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