The definition of a hormone is a substance formed in an organ or tissue in the body of a plant or animal and then transported by body fluid to another organ or tissue for a specific action.(noun)
An example of a hormone is estrogen in humans.
See hormone in Webster's New World College Dictionary
Origin: < Gr hormōn, prp. of horman, to stimulate, excite < hormē, impulse < IE base *ser-, to stream > Sans sará-, fluid, L serum, whey
See hormone in American Heritage Dictionary 4
Origin: From Greek hormōn
Origin: , present participle of hormān, to urge on
Origin: , from hormē, impulse; see er-1 in Indo-European roots.
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