biological Definition in Cambridge British English Dictionary
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Definition of "biological" - British English Dictionary

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biologicaladjective

uk   /ˌbaɪ.əˈlɒdʒ.ɪ.kəl/  us   /-ˈlɑː.dʒɪ-/
B2 connected with the natural processes of living things: the biological sciences Eating is a biological necessity! [before noun] related by birth: She decided to search for her biological mother after her adoptive parents died. UK used to describe a substance used for cleaning that uses enzymes to remove dirt: biological washing powder
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using living matter, such as bacteria, to seriously harm and kill people and animals, and to damage crops: biological weapons/warfare
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biologically
adverb uk   us   /-i/
biologically active/stable chemicals
(Definition of biological from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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