[sim-bee-ot-ik, -bahy-]
See more synonyms for symbiotic on
  1. living in symbiosis, or having an interdependent relationship: Many people feel the relationship between humans and dogs is symbiotic.
Sometimes sym·bi·ot·i·cal.

Origin of symbiotic

Related formssym·bi·ot·i·cal·ly, adverbnon·sym·bi·ot·ic, adjectivenon·sym·bi·ot·i·cal, adjectivenon·sym·bi·ot·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for symbiotic

Contemporary Examples of symbiotic

Historical Examples of symbiotic

Word Origin and History for symbiotic

1882, in biology, from symbiosis. Of human activities, from 1951.

Online Etymology Dictionary, © 2010 Douglas Harper

symbiotic in Medicine


[sĭm′bē-ŏtĭk, -bī-]
  1. Of, resembling, or relating to symbiosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

symbiotic in Science


  1. The close association between two or more organisms of different species, often but not necessarily benefiting each member. The association of algae and fungi in lichens and of bacteria living in the intestines or on the skin of animals are forms of symbiosis. Some scientists believe that many multicellular organisms evolved from symbiotic relationships between unicellular ones and that the DNA-containing organelles within certain eukaryotic cells (such as mitochondria and chloroplasts) are the product of symbiotic relationships in which the participants became interdependent. There are four forms of symbiosis: amensalism, commensalism, mutualism, and parasitism.
Related formssymbiotic adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.