or bi·o·log·ic

[ bahy-uh-loj-i-kuh l or bahy-uh-loj-ik ]
/ ˌbaɪ əˈlɒdʒ ɪ kəl or ˌbaɪ əˈlɒdʒ ɪk /


pertaining to biology.
of or relating to the products and operations of applied biology: a biological test.


Pharmacology. any substance, as a serum or vaccine, derived from animal products or other biological sources and used to treat or prevent disease.

Nearby words

  1. biol.,
  2. biolinguistics,
  3. biologic,
  4. biologic assay,
  5. biologic evolution,
  6. biological accumulation,
  7. biological child,
  8. biological clock,
  9. biological control,
  10. biological engineering

Origin of biological

First recorded in 1855–60; biolog(y) + -ical

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for biologic

British Dictionary definitions for biologic


archaic biologic

/ (ˌbaɪəˈlɒdʒɪkəl) /


of or relating to biology
(of a detergent) containing enzymes said to be capable of removing stains of organic origin from items to be washed


(usually plural) a drug, such as a vaccine, that is derived from a living organism
Derived Formsbiologically, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for biologic



1840, from biology + -ical. Biological clock attested from 1955; not especially of human reproductive urges until c.1991. Related: Biologically.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for biologic


[ bī′ə-lŏjĭk ]


A preparation, such as a drug, a vaccine, or an antitoxin, that is synthesized from living organisms or their products and used as a diagnostic, preventive, or therapeutic agent.


[ bī′ə-lŏjĭ-kəl ]


Of, relating to, caused by, or affecting life or living organisms.
Having to do with biology.
Related by blood, as in a child's biological parents.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.