[bahy-oh-ree-juh n]

Origin of bioregion

First recorded in 1980–85; bio- + region
Related formsbi·o·re·gion·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

bioregion in Science


  1. An area constituting a natural ecological community with characteristic flora, fauna, and environmental conditions and bounded by natural rather than artificial borders.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.