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Definition of NAD
1. Noun. A coenzyme present in most living cells and derived from the B vitamin nicotinic acid; serves as a reductant in various metabolic processes.
Definition of NAD
1. Initialism. (coenzyme) nicotinamide adenine dinucleotide ¹
2. Initialism. nothing abnormal discovered - used frequently in medical test results ¹
3. Initialism. (linguistics) noun animate dependent ¹
¹ Source: wiktionary.com
Medical Definition of NAD
1.