Biome \Bi"ome\ (b[imac]"[=o]m), n. [Gr. bi`os life.]
1. (Ecology) a specific type of complex ecological community
characterized by specific environmental conditions and a
distinctive group of plants and animals, maintained in a
relatively stable equilibrium, such as a {rain forest
biome} or {prairie biome}.
[PJC]
2. a particular region which is a biome[1].
[PJC]