ornithine

noun
or·​ni·​thine | \ ˈȯr-nə-ˌthēn How to pronounce ornithine (audio) \

Definition of ornithine

: a crystalline amino acid C5H12N2O2 that functions especially in urea production as a carrier by undergoing conversion to citrulline and then arginine in reaction with ammonia and carbon dioxide followed by recovery along with urea by enzymatic hydrolysis of arginine

First Known Use of ornithine

1878, in the meaning defined above

History and Etymology for ornithine

International Scientific Vocabulary ornithuric acid (a compound of which ornithine is a component, found in the urine of birds) + -ine entry 2

Keep scrolling for more

Learn More about ornithine

Statistics for ornithine

Look-up Popularity

Time Traveler for ornithine

The first known use of ornithine was in 1878

See more words from the same year

Keep scrolling for more

More Definitions for ornithine

ornithine

noun
or·​ni·​thine | \ ˈȯr-nə-ˌthēn How to pronounce ornithine (audio) \

Medical Definition of ornithine

: a crystalline amino acid C5H12N2O2 that functions especially in urea production as a carrier by undergoing conversion to citrulline and then arginine in reaction with ammonia and carbon dioxide followed by recovery along with urea by enzymatic hydrolysis of arginine

More from Merriam-Webster on ornithine

Britannica.com: Encyclopedia article about ornithine

Comments on ornithine

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

WORD OF THE DAY

a haphazard or makeshift solution

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

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!