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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 NAD /ˌɛn(ˌ)eˈdi/

From: Webster's Revised Unabridged Dictionary (1913)

 Nad Nad·de.  Had not. [Obs.]
 ◄ ►

From: WordNet (r) 2.0

 NAD
      n : a coenzyme present in most living cells and derived from the
          B vitamin nicotinic acid; serves as a reductant in
          various metabolic processes [syn: nicotinamide adenine
           dinucleotide]