You know what it looks like… but what is it called?
TAKE THE QUIZ“activating factor”
We have one entry that includes the term activating factor.
platelet-activating factor
noun: phospholipid that is produced especially by mast cells and basophils, causes the aggregation of blood platelets and the release of blood-platelet substances (as histamine or serotonin), and is a mediator of inflammation (as in asthma) —abbreviation PAF
-
- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


Pick the best words!
PLAYLove words? Need even more definitions?
Merriam-Webster unabridged