Dictionary.com
definitions

pus

[puhs]

noun

a yellow-white, more or less viscid substance produced by suppuration and found in abscesses, sores, etc., consisting of a liquid plasma in which white blood cells are suspended.

Origin of pus

1535–45; < Latin; akin to Greek pýon pus. See pyo-
Related formspus·like, adjective
Can be confusedpus puss
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for puses

matter, sinus, pustule, maturation, suppuration, purulence
British Dictionary definitions for puses

pus

noun

the yellow or greenish fluid product of inflammation, composed largely of dead leucocytes, exuded plasma, and liquefied tissue cells

Word Origin for pus

C16: from Latin pūs; related to Greek puon pus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for puses

pus

n.

late 14c., from Latin pus "pus, matter from a sore;" figuratively "bitterness, malice" (related to puter "rotten;" cf. putrid), from PIE *pu- (2) "to rot, decay" (cf. Sanskrit puyati "rots, stinks," putih "stinking, foul;" Greek puon "discharge from a sore," pythein "to cause to rot;" Gothic fuls, Old English ful "foul"), perhaps originally echoic of a natural exclamation of disgust.

Online Etymology Dictionary, © 2010 Douglas Harper
puses in Medicine

pus

[pŭs]

n.

A generally viscous, yellowish-white fluid formed in infected tissue, consisting of white blood cells, cellular debris, and necrotic tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
puses in Science

pus

[pŭs]

A thick, yellowish-white liquid that forms in infected body tissues, consisting of white blood cells, dead tissue, and cellular debris.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.