Dictionary![]() ![]() bi•o•log•i•calPronunciation: (bī"u-loj'i-kul), [key] —adj. 1. pertaining to biology. 2. of or pertaining to the products and operations of applied biology: a biological test. —n. 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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