Definition of mitosome in US English:

mitosome

noun

Biology
  • An area of a cell in which mitochondria are aggregated (now rare, perhaps obsolete); (later) an organelle in the cytoplasm of certain protozoans that corresponds to a mitochondrion. Also: †a cytoplasmic structure formed by the remains of the mitotic spindle (obsolete).

Origin

Late 19th century; earliest use found in Journal of Morphology. From German Mitosoma from mito- + -soma.

Pronunciation

mitosome

/ˈmʌɪtə(ʊ)səʊm/