Surrounding, encompassing; pertaining to the environment in which an organism or apparatus functions. [L. ambiens, going around]
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am·bi·ent 'am-bē-ənt adj surrounding on all sides <the \ambient environment> <\ambient air pollution>
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am·bi·ent (amґbe-ənt) [L. ambire to surround] surrounding; encompassing; prevailing.Medical dictionary. 2011.