Main Entry: per·ox·i·some

Pronunciation: \pə-ˈräk-sə-ˌsōm\

Function: noun

Etymology: peroxide + 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 \-ˌräk-sə-ˈsō-məl\ adjective