a combining form meaning “mode of life,” used in the formation of compound words: aerobiosis; parabiosis.

< Greek bíōsis, equivalent to biō-, verbid stem of bioûn to live + -sis -sis; cf. anabiosis, symbiosis, on which subsequent coinages were probably modeled

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World English Dictionary
n combining form
indicating a specified mode of life: symbiosis
[New Latin, from Greek biōsis; see bio-, -osis]
adj combining form

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Medical Dictionary

-biosis suff.
A way of living: parabiosis.

The American Heritage® Stedman's Medical Dictionary
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