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[puh-rok-suh-sohm] /pəˈrɒk səˌsoʊm/

noun, Cell Biology.
a cell organelle containing catalase, peroxidase, and other oxidative enzymes and performing essential metabolic functions, as the decomposition of fatty acids and hydrogen peroxide.
a type of organelle present in most eukaryotic cells that carry out oxidative reactions, such as oxidation of alcohol in the liver

peroxisome per·ox·i·some (pə-rŏk’sĭ-sōm’)
A cell organelle containing enzymes, such as catalase and oxidase, that catalyze the production and breakdown of hydrogen peroxide. Also called microbody.
A cell organelle containing enzymes that catalyze the production and breakdown of hydrogen peroxide.


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  • Peroxy

    [puh-rok-see] /pəˈrɒk si/ adjective, Chemistry. 1. containing the peroxy group. 1. a combining form used in the names of chemical compounds in which the peroxy group is present: peroxyborate. combining form 1. indicating the presence of the peroxide group, -O–O-: peroxysulphuric acid Also (not in technical usage) per- peroxy per·ox·y (pə-rŏk’sē) adj. Containing the bivalent […]

  • Peroxyacid

    [puh-rok-see-as-id] /pəˌrɒk siˈæs ɪd/ noun, Chemistry. 1. an derived from hydrogen peroxide and containing the –O–O– group, as , H 2 S 2 O 8 .

  • Peroxyborate

    [puh-rok-see-bawr-eyt, -it, -bohr-] /pəˌrɒk siˈbɔr eɪt, -ɪt, -ˈboʊr-/ noun, Chemistry. 1. .

  • Peroxydisulfuric-acid

    [puh-rok-see-dahy-suhl-fyoo r-ik, -rok-] /pəˈrɒk siˌdaɪ sʌlˈfyʊər ɪk, -ˌrɒk-/ noun, Chemistry. 1. (def 2).

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