NADalso: ナッド · エヌエーディーFreq.FrequencyTop 100,000Meanings1nounnicotinamide adenine dinucleotide (NAD)chemistryA coenzyme central to metabolism; used in biochemistry and molecular biology.See also: ニコチンアミドアデニンジヌクレオチドNADは細さい胞ぼう呼こ吸きゅうにおいて重じゅう要ような補ほ酵こう素そです。NAD is an important coenzyme in cellular respiration.