ghrelin

noun
ghrel·​in | \ ˈgrel-ən How to pronounce ghrelin (audio) \

Medical Definition of ghrelin

: a 28-amino-acid peptide hormone that is secreted primarily by stomach cells with lesser amounts secreted by other cells (as of the pancreas) and acts to stimulate appetite and the secretion of growth hormone Weight reduction brought about by caloric restriction causes the ghrelin level to increase, suggesting that ghrelin might contribute to the drive to eat that makes long-term success with dieting so rare.— Jeffrey S. Flier and Eleftheria Maratos-Flier, The New England Journal of Medicine, 23 May 2002

Comments on ghrelin

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

WORD OF THE DAY

marked by a state of overwhelming emotion

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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!