Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

octapeptide

play
noun oc·ta·pep·tide \ˌäk-tə-ˈpep-ˌtīd\

Medical Definition of octapeptide

  1. :  a protein fragment or molecule (as oxytocin or vasopressin) that consists of eight amino acids linked in a polypeptide chain




Learn More about octapeptide


Seen and Heard

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

WORD OF THE DAY

marked by propriety and good taste

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin oily angry prompt
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ