n.
Pronunciation: p ə - ' räk-s ə - ˌ s ō m
Function: noun
Etymology: peroxi de + 3 -some
Date: 1965
: a cytoplasmic cell organelle containing enzymes (as catalase) which act in oxidative reactions and especially in the production and decomposition of hydrogen peroxide
– per · ox · i · som · al \ - ˌ räk-s ə - ' s ō -m ə l \ adjective