autacoid
au·ta·coid
noun
1.
any physiologically active internal secretion especially one of uncertain classification
Origin
From aut- + Ancient Greek ἄκος (ákos, “remedy”) + -oid.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.