Meaning of biological

bi•o•log•i•cal

Pronunciation: (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.
  1. any substance, as a serum or vaccine, derived from animal products or other biological sources and used to treat or prevent disease.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: