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operon

[op-uh-ron]
noun Genetics.
  1. a set of two or more adjacent cistrons whose transcription is under the coordinated control of a promoter, an operator, and a regulator gene.
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Origin of operon

1960–65; < French opéron, equivalent to opér(er) to work, operate + -on -on1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for operon

operon

noun
  1. genetics a group of adjacent genes in bacteria functioning as a unit, consisting of structural genes and an operator
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Word Origin

C20: from operate
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

operon in Medicine

operon

(ŏpə-rŏn′)
n.
  1. A unit of gene activity consisting of a sequence of genetic material that functions in a coordinated manner to control the production of mRNA and that consists of an operator gene, a promoter, and two or more structural genes.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

operon in Science

operon

[ŏpə-rŏn′]
  1. A sequence of genetic material that functions in a coordinated manner, consisting of an operator, a promoter, and one or more structural genes that are transcribed together. Operons were first found in prokaryotes.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.