biological

• POS: Adjective, Noun
• HYPHEN: bi=o=log=i=cal

CIDE DICTIONARY

biological, a. 

•  Of or relating to biology.  [1913 Webster]
•  related by blood; -- of parents and children; -- contrasted with adoptive, adopted, or foster; as, Mary was adopted directly from the maternity hospital and never met her biological mother.  [WordNet 1.5]

OXFORD DICTIONARY

biological, adj. of or relating to biology or living organisms.

Idiom

biological clock an innate mechanism controlling the rhythmic physiological activities of an organism. biological control the control of a pest by the introduction of a natural enemy. biological warfare warfare involving the use of toxins or micro-organisms.

Derivative

biologically adv.