[ an-tee-bahy-oh-sis, an-tahy- ]

  1. an association between organisms that is injurious to one of them.

Origin of antibiosis

First recorded in 1895–1900; anti- + -biosis

Words Nearby antibiosis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for antibiosis


/ (ˌæntɪbaɪˈəʊsɪs) /

  1. an association between two organisms, esp microorganisms, that is harmful to one of them

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

Scientific definitions for antibiosis


[ ăn′tē-bī-ōsĭs, ăn′tī- ]

  1. An association between two or more organisms that is detrimental to at least one of them. Allelopathy (the production of chemicals by one plant species that inhibit the growth of another) is an example of antibiosis.

  2. The antagonistic association between an organism and the metabolic substances produced by another.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.