NAD

noun
\ ˌen-(ˌ)ā-ˈdē How to pronounce NAD (audio) \

Definition of NAD

: a coenzyme C21H27N7O14P2 of numerous dehydrogenases that occurs in most cells and plays an important role in all phases of intermediary metabolism as an oxidizing agent or when in the reduced form as a reducing agent for various metabolites

called also nicotinamide adenine dinucleotide, diphosphopyridine nucleotide, DPN

First Known Use of NAD

circa 1962, in the meaning defined above

History and Etymology for NAD

nicotinamide adenine dinucleotide

Keep scrolling for more

Learn More about NAD

Dictionary Entries near NAD

nacreous

nacreous cloud

nacrite

NAD

nada

nadder

Na-Dene

Statistics for NAD

Look-up Popularity

Time Traveler for NAD

The first known use of NAD was circa 1962

See more words from the same year

Keep scrolling for more

More Definitions for NAD

NAD

noun
\ ˌen-ˌā-ˈdē How to pronounce NAD (audio) \

Medical Definition of NAD

 (Entry 1 of 2)

: a coenzyme C21H27N7O14P2 of numerous dehydrogenases that occurs in most cells and plays an important role in all phases of intermediary metabolism as an oxidizing agent or when in the reduced form as a reducing agent for various metabolites

called also diphosphopyridine nucleotide, DPN, nicotinamide adenine dinucleotide

Medical Definition of NAD (Entry 2 of 2)

no appreciable disease

Comments on NAD

What made you want to look up NAD? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

highly pertinent or appropriate

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!