properdin definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a protein present in blood serum and active in the destruction of bacteria and the neutralization of viruses
Origin: ; from pro(tein) plush Classical Latin perdere, to destroy plush -in
properdin definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A protein in blood serum that participates in the body's immune response by working in conjunction with the alternative pathway of the complement system.
Origin: Probably pro-1 + Latin perdere, to destroy; see perdition + -in.
properdin - Medical Definition
A natural protein in human blood serum that participates in the body's immune response by working in conjunction with the complement system.