Suppuration is the process of pus forming. If you can't remove a tiny splinter from your finger, over time some suppuration may occur around it.

Use the noun suppuration when you need a nice clean medical term for the formation of pus, the white substance that sometimes oozes from a sore or a pimple. Suppuration can happen because of an infection or skin irritation. The Latin root is suppurare, "to form or discharge pus," from sub, "under," and pus, which literally means "matter from a sore," and figuratively, "bitterness or malice."

Definitions of suppuration
  1. noun
    (medicine) the formation of morbific matter in an abscess or a vesicle and the discharge of pus
    synonyms: festering, maturation
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    type of:
    activity, bodily function, bodily process, body process
    an organic process that takes place in the body
  2. noun
    a fluid product of inflammation
    synonyms: festering, ichor, purulence, pus, sanies
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    a thin morbid discharge as from a wound or especially chronic gonorrhea
    type of:
    bodily fluid, body fluid, humor, humour, liquid body substance
    the liquid parts of the body
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