[het-uh-rol-uh-guh s]
  1. Biology. of different origin; pertaining to heterology.
  2. Medicine/Medical, Pathology. consisting of dissimilar tissue, as that of another species or that of a tumor.
  3. Immunology. pertaining to an antigen that elicits a reaction in a nonspecific antibody.

Origin of heterologous

1815–25; hetero- + -logous (see -logy, -ous)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for heterologous

Historical Examples of heterologous

British Dictionary definitions for heterologous


  1. pathol of, relating to, or designating cells or tissues not normally present in a particular part of the body
  2. (esp of parts of an organism or of different organisms) differing in structure or origin
Derived Formsheterology, noun
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

heterologous in Medicine


  1. Of or relating to cytologic or histological elements not normally occurring in a designated part of the body.
  2. Derived from a different species, as a graft or transplant.
  3. Immunologically related but not identical. Used of certain cells and antiserums.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

heterologous in Science


  1. Derived or transplanted from a different species or source.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.