biome

n. distinct ecological community (such as a rainforest, desert, etc.)

A biome is a major geographical area of ecologically similar communities of plants, animals, and soil organisms, often referred to as ecosystems. Biomes are defined based on factors such as plant structures (such as trees, shrubs, and grasses), leaf types (such as broadleaf and needleleaf), plant spacing (forest, woodland, savanna), and other factors like climate. Unlike ecozones, biomes are not defined by genetic, taxonomic, or historical similarities. Biomes are often identified with particular patterns of ecological succession and climax vegetation.
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Noun
1. a major biotic community characterized by the dominant forms of plant life and the prevailing climate
(hypernym) community, biotic community
(hyponym) desert

Entire community of living organisms in a single major ecological area. (See: biotic community.)

A grouping of plant ecosystems into a large distinct group occupying a major terrestrial region. They are created and maintained by climate. See examples of biomes.