| NOUN | substance | NAD, nicotinamide adenine dinucleotide | a coenzyme present in most living cells and derived from the B vitamin nicotinic acid |
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| Sounds | nae'd | |
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| Rhymes | ad / AD ... Volgograd: 50 rhymes with aed... | |
| Meaning | A coenzyme present in most living cells and derived from the B vitamin nicotinic acid; serves as a reductant in various metabolic processes. | |
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| Synonym | nicotinamide adenine dinucleotide | |
| Broader | coenzyme | A small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes |