1. (medicine) the formation of morbific matter in an abscess or a vesicle and the discharge of pus
   - suppuration, maturation 
2. A fluid product of inflammation
   - pus, purulence, suppuration, ichor, sanies

1. Ripen and generate pus
   "her wounds are festering"
   - maturate, suppurate

Type of: activity, bodily fluid, bodily function, bodily process, body fluid, body process, discharge, eject, exhaust, expel, humor [US], humour [Brit, Cdn], liquid body substance, release

Encyclopedia: Fester

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