opsonin

play
noun op·so·nin \ˈäp-sə-nən\

Definition of opsonin

  1. :  any of various proteins (such as antibodies or complement) that bind to foreign particles and cells (such as bacteria) making them more susceptible to the action of phagocytes

Origin and Etymology of opsonin

Latin opsonare to buy provisions, cater (from Greek opsōnein) + English 1-in — more at oligopsony


First Known Use: 1903


Medical Dictionary

opsonin

play
noun op·so·nin \ˈäp-sə-nən\

Medical Definition of opsonin

  1. :  any of various proteins (as complement or antibodies) that bind to foreign particles and microorganisms (as bacteria) making them more susceptible to the action of phagocytes


Learn More about opsonin


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

a weapon for destroying ships

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • young-people-being-filmed-during-a-spelling-bee
  • Which is the correct spelling of the winning word from 1988?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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!