Hormone
WordNet

noun


(1)   The secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
WiktionaryText

Etymology


From , from , .

Noun



  1. Any substance, produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.
  2. A synthetic compound with the same activity.
  3. Any similar substance in plants.
 
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