Definition of biosphere
1 : the part of the world in which life can exist
2 : living organisms together with their environment
biosphericplay \ˌbī-ə-ˈsfir-ik, -ˈsfer-, -ˈsfe-rik\ adjective
Recent Examples of biosphere from the Web
Serengeti-Ngorongoro Biosphere Reserve (Tanzania)—The biosphere reserve covers a surface area of 4,397,314 ha and was originally designated in 1981.
Keeping with the movie’s theme, the new biosphere emphasizes nature, ecology and conservation.
When microbes that can harness sunlight finally evolve, the productivity and diversity of the biosphere leveled up.
This problem of emergence is very much related to the problem of selection, the levels at which selection happens, and how that creates space or niches for new species to emerge in the biosphere.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biosphere'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
The lithosphere is the solid surface of the earth (lith- meaning "rock"); the hydrosphere is the earth's water (hydro- means "water"), including the clouds and water vapor in the air; and the atmosphere is the earth's air (atmos- meaning "vapor"). The term biosphere can include all of these, along with the 10 million species of living things they contain. The biosphere recycles its air, water, organisms, and minerals constantly to maintain an amazingly balanced state; human beings should probably do their best to imitate it. Though the word has a new sound to it, it was first used over a hundred years ago.
First Known Use of biosphere
BIOSPHERE Defined for English Language Learners
Definition of biosphere for English Language Learners
: the part of the Earth in which life can exist
Medical Definition of biosphere
1: the part of the world in which life can exist
2: living beings together with their environment
Seen and Heard
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