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Longman Dictionary of Contemporary English
▪ The thicket leads into a compact marshy wetland, the fifth biome, which finally emptied into the lagoon.
The Collaborative International Dictionary

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.

  2. a particular region which is a biome[1].

Douglas Harper's Etymology Dictionary

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


n. Any major regional biological community such as that of forest or desert.


n. a major biotic community characterized by the dominant forms of plant life and the prevailing climate


A biome is a formation of plants and animals that have common characteristics due to similar climates and can be found over a range of continents. Biomes are distinct from habitats, because any biome can comprise a variety of habitats.

A biome contrasts with a microbiome. A microbiome is also a mix of organisms that coexist in a defined space, but on a much smaller scale. For example, the human microbiome is the collection of bacteria, viruses, and other microorganisms that are present on a human.

Usage examples of "biome".

The mold that wrecked the biome designed by my parents came in with someone or something.

Other fauna boasted by the local biome included marsh rabbits, deer, river otters, a night bird called a clapper rail, and the rare bobcat.

In order to do this I had to analyze the Awbrian biochemistry and the biome of the hex and see if what I wanted was possible.

It will be necessary that you remain in the room for a period of time so that your bodies may become properly acclimated to the biome beyond this point.

In ecology, an ecotone is a place where two living biomes come together, a convergence characterized by a rich variety of vegetation and animal life.

Mars and other biomes would require whole new life-forms, but the start would be to see if we could actually come up with working, functioning, hybrids.

The races and biomes are simply too different, and designed so that no one race could extend supplies over that large an area for any length of time.

Did I really do that, craft an entire world, landscapes and biomes and evaporation cycles, and then forget to populate it?

The biome, such as I am now seeing, will be built in pieces, delivered by shuttles coming from the orbiting Mir space station.

Sterilizing the sector by fire might give the new biome a slight advantage.

The planetary engineering boys went to work and the biome balance was thrown off.

In order to do this I had to analyze the Awbrian biochemistry and the biome of the hex and see if what I wanted was possible.

Or maybe steal a Matrioshka brain that's succumbed to senile dementia and turn it back into planetary biomes with cores of diamond-phase computronium to fulfil some kind of demented pastoralist nostalgia trip.

Was he pensioned and spending all his time hunting this monster, who must be well-hidden and well-protected and in a biome the hunter couldn't ever really pierce?

DeMob gave me a reasonably secure cover identity as a playboy remittance man from a primogeniture polity, sent to while away his youth in less hidebound (and politically loaded) biomes, and it’.