biological Meaning in the Cambridge English Dictionary
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Meaning of “biological” in the English Dictionary

"biological" in British English

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uk   /ˌbaɪ.əˈlɒdʒ.ɪ.kəl/  us   /-ˈlɑː.dʒɪ-/
B2 connected with the ​naturalprocesses 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 ​adoptiveparentsdied. UK used to ​describe a ​substance used for ​cleaning that uses enzymes to ​removedirt: biological ​washingpowder
using ​livingmatter, such as ​bacteria, to ​seriouslyharm and ​killpeople and ​animals, and to ​damagecrops: biological weapons/​warfare
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adverb uk   us   /-i/
biologically ​active/​stablechemicals
(Definition of biological from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"biological" in American English

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biologicaladjective [not gradable]

 us   /ˌbɑɪ·əˈlɑdʒ·ɪ·kəl/
relating to the ​naturalprocesses of ​living things: the biological ​sciences Biological also ​means being ​related through ​birth: the biological ​father/​mother/​parents
(Definition of biological from the Cambridge Academic Content Dictionary © Cambridge University Press)
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