microsome: Meaning and Definition of

mi•cro•some

Pronunciation: (mī'kru-sōm"), [key]
— n. Cell Biol.
  1. a small inclusion, consisting of ribosomes and fragments of the endoplasmic reticulum and mitochondria, in the cytoplasm of a cell.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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