properdin

noun
pro·​per·​din | \ prō-ˈpər-dᵊn How to pronounce properdin (audio) \

Definition of properdin

: a blood serum protein that participates in the activation of complement in a pathway which does not involve the presence of antibodies

First Known Use of properdin

1954, in the meaning defined above

History and Etymology for properdin

probably from pro- entry 1 + Latin perdere to destroy + English -in entry 1 — more at perdition

Learn More About properdin

Time Traveler for properdin

Time Traveler

The first known use of properdin was in 1954

See more words from the same year

Dictionary Entries Near properdin

properate

properdin

proper fraction

See More Nearby Entries 

Statistics for properdin

Cite this Entry

“Properdin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/properdin. Accessed 7 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for properdin

properdin

noun
pro·​per·​din | \ prō-ˈpərd-ᵊn How to pronounce properdin (audio) \

Medical Definition of properdin

: a blood serum protein that participates in the activation of complement in a pathway which does not involve the presence of antibodies

WORD OF THE DAY

Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!