1. a combining form of Greek origin used, with the meaning “organ (of the body),” “musical instrument,” or as a combining form of organic in the formation of compound words: organology; organosilicon.

Origin of organo-

< Greek, combining form of órganon organ Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for organo-


combining form
  1. (in biology or medicine) indicating an organ or organsorganogenesis
  2. (in chemistry) indicating a compound containing an organic grouporganometallic; organosulphur; organophosphate
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

organo- in Medicine


  1. Organ:organotrophic.
  2. Organic:organomercurial.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.