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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.
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Origin of organo-

<Greek, combining form of órganonorgan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023


What does organo- mean?

Organo- is a combining form used like a prefix with several meanings. In biology and medicine, it refers to an “organ (of the body).” In chemistry, it represents organic, referring to “chemical compounds existing in or derived from plants or animals and carbon compounds.” Very occasionally, it means “musical instrument.”

Organo- comes from the Greek órganon, meaning “organ.”

Examples of organo-

One example of a term that features the combining form organo- is organology, “the branch of biology that deals with the structure and functions of the organs of living things.”

As we have seen, in terms from biology, organo- means “organ.” The ending -logy may also look familiar: it is commonly used to denote areas of study. Organology literally translates to “the study of organs.”

What are some words that use the combining form organo-?

What are some other forms that organo- may be commonly confused with?

Break it down!

Genesis means “an origin, creation, development.” What does the biological term organogenesis refer to the development of?

How to use organo- in a sentence

British Dictionary definitions for organo-


combining form
(in biology or medicine) indicating an organ or organsorganogenesis
(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