n.
Pronunciation: ' m ī -kr ə - ˌ s ō m
Function: noun
Etymology: International Scientific Vocabulary
Date: 1885
1 : any of various minute cellular structures (as a ribosome)
2 : a particle in a particulate fraction that is obtained by heavy centrifugation of broken cells and consists of various amounts of ribosomes, fragmented endoplasmic reticulum, and mitochondrial cristae
– mi · cro · som · al \ ˌ m ī -kr ə - ' s ō -m ə l \ adjective