- platelet-aggregating factor
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for paf
Yo' wants to go through th' ya'd, to a paf that takes you a spell to a gate.The Forest
Stewart Edward White
You see how it is; this is the only chance I ever had of working out a beautiful case, and, paf!File No. 113
Paff, paf, n. a meaningless word, used with piff to indicate jargon.
Carry it in the bosom of your dress, and it is always ready; then if anybody bothers you, out with it, and paf!Captain Fracasse