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Medical Term:


Pronunciation: het'er-ol'o-gus


  1. Pertaining to cytologic or histologic elements occurring where they are not normally found.
  2. Derived from an animal of a different species, as the serum of a horse is heterologous for a rabbit.

[hetero- + G. logos, ratio, relation]

See Also: xenogeneic

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.