pus definition by Webster's New World
Origin: Classical Latin ; from Indo-European base an unverified form pū-, an unverified form pu-, to rot, stink (prob. origin, originally echoic of cry of disgust) from source foul, Classical Greek pyon, pus, Classical Latin putridus, putrid
pus definition by American Heritage Dictionary
Origin: Latin pūs; see pū̆- in Indo-European roots.
pus - Medical Definition
pus - Science Definition