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ectocrine

noun
  1. a substance that is released by an organism into the external environment and influences the development, behaviour, etc, of members of the same or different species
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Word Origin for ectocrine

C20: from ecto- + -crine, as in endocrine
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