biological

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bi·o·log·i·cal / ˌbīəˈläjikəl/ (abbr.: biol.) • adj. of or relating to biology or living organisms. ∎  genetically related; related by blood: the alleged rights of the biological father. ∎  (of a detergent or other cleaning product) containing enzymes to assist the process of cleaning.• n. a therapeutic substance, such as a vaccine or drug, derived from biological sources: [usu. pl.] an international biotechnology company with interests in biologicals, agriculture, and pharmaceutical products. DERIVATIVES: bi·o·log·i·cal·ly / -ik(ə)lē/ adv.