【医】 pyopneumocyst
purulence; pus【医】 matter; pus
gas【医】 aer-; aero-; air; atmo-; physo-; pneuma; pneuma-; pneumato-; pneumo-
cyst【医】 cyst; cyst-; cysti-; cystido-; cystis; cysto-; hydatoncus; kysto-