Test your vocabulary with our 10-question quiz!
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
Love words? Need even more definitions?
Merriam-Webster unabridged