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[bahy-ohm] /ˈbaɪ oʊm/
noun, Ecology
a complex biotic community characterized by distinctive plant and animal species and maintained under the climatic conditions of the region, especially such a community that has developed to climax.
1915-20; bi-2 + -ome -oma Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for biomes
  • Learning about taxidermy to creating dioramas that depict the diverse life forms in different biomes.
  • The pillowy and interlocking design of these biomes was influenced by dragonfly wings.
  • Most of the original biomes are a tourist attraction.
  • They sampled genetic material from the biomes at varying depths.
  • Some biomes in nature are shy of opportunities for life.
  • biomes describe major habitat types that often share many species.
British Dictionary definitions for biomes


a major ecological community, extending over a large area and usually characterized by a dominant vegetation See formation (sense 6)
Word Origin
C20: from bio- + -ome
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
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Word Origin and History for biomes



1908, from Greek bios (see bio-) + -ome.

Online Etymology Dictionary, © 2010 Douglas Harper
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biomes in Medicine

biome bi·ome (bī'ōm')
The total complex of biotic communities occupying and characterizing a particular area or zone, such as a desert or deciduous forest.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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biomes in Science
A large community of plants and animals that occupies a distinct region. Terrestrial biomes, typically defined by their climate and dominant vegetation, include grassland, tundra, desert, tropical rainforest, and deciduous and coniferous forests. There are two basic aquatic biomes, freshwater and marine, which are sometimes further broken down into categories such as lakes and rivers or pelagic, benthic, and intertidal zones.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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