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microsome

American  
[mahy-kruh-sohm] / ˈmaɪ krəˌsoʊm /

noun

Cell Biology.

  1. a small inclusion, consisting of ribosomes and fragments of the endoplasmic reticulum and mitochondria, in the cytoplasm of a cell.

microsome British  
/ ˈmaɪkrəʊˌsəʊm /

noun

  1. any of the small particles consisting of ribosomes and fragments of attached endoplasmic reticulum that can be isolated from cells by centrifugal action

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • microsomal adjective
  • microsomial adjective
  • microsomic adjective

Etymology

Origin of microsome

First recorded in 1880–85; micro- + -some 3

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.