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Medical Term:

ecological ectocrine


a chemical substance that undergoes biosynthesis in one species and that exerts an effect on the function of another species through mechanisms of the external environment; the biosynthesis of vitamins by ruminants and their subsequent ingestion by other animals.

See Also: ectohormone

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