Etymology
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purulent (adj.)

early 15c., purulente, "pus-colored," from Latin purulentus "full of pus," from pus (genitive puris) "pus" (see pus). Meaning "consisting of pus" is from 1590s. Related: Purulence.

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Definitions of purulent

purulent (adj.)
containing pus;
a purulent wound
Synonyms: pussy
From wordnet.princeton.edu