Het`er*ol"o*gous (?), a. [Hetero- + Gr. proportion.]
Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; -- opposed to homologous; as, heterologous organs.
Heterologous stimulus. Physiol. See under Stimulus. -- Heterologous tumor Med., a tumor differing in structure from the normal tissues of the body.
© Webster 1913.