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WordReference Random House Learner's Dictionary of American English © 2024bi•o•log•i•cal /ˌbaɪəˈlɑdʒɪkəl/USA pronunciation also ˌbi•oˈlog•ic,adj. - Biologyof or relating to biology:biological sciences.
- using chemical or living organisms (such as viruses, etc.) to harm an enemy:[before a noun]biological weapons.
- Developmental Biology[before a noun] related by blood rather than by adoption: biological parents.
bi•o•log•i•cal•ly, adv. WordReference Random House Unabridged Dictionary of American English © 2024bi•o•log•i•cal (bī′ə loj′i kəl),USA pronunciation adj. - Biologypertaining to biology.
- of or pertaining to the products and operations of applied biology:a biological test.
n. - Drugs[Pharm.]any substance, as a serum or vaccine, derived from animal products or other biological sources and used to treat or prevent disease. Also, bi′o•log′ic.
- biolog(y) + -ical 1855–60
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