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peroxisome Syllabification: per·ox·i·some
Pronunciation: /pəˈräksəsōm/

Definition of peroxisome in English:


A small organelle that is present in the cytoplasm of many cells and that contains the reducing enzyme catalase and usually some oxidases.
Example sentences
  • The contributing enzymes are localized in three different organelles, chloroplasts, peroxisomes, and mitochondria.
  • These receptors were originally discovered as proteins activated by agents that stimulate proliferation of peroxisomes in rat liver.
  • We need to know more about the other enzymes in the lantern peroxisomes.


Pronunciation: /-ˌräksiˈsōməl/
Example sentences
  • Catalase, a well-known peroxisomal marker enzyme, was also included in this work.
  • This family includes receptors for steroid hormones, thyroid hormones, hormonal forms of vitamin A and D, and peroxisomal activators.
  • The other two proteins identified, Fox2 and Ams1, are peroxisomal and vacuolar enzymes, respectively.


1960s: from peroxide + -some3.

Definition of peroxisome in:
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