Hormone
early 20th century: from Greek hormōn, present participle of horman ‘impel, set in motion’.
wiktionary
From Ancient Greek ὁρμή(hormḗ, “rapid motion forwards, onrush, onset, assault, impulse to do a thing, effort”), whence ὁρμάω(hormáō), ὁρμῶ(hormô, “to set in motion, to urge on, to cheer on, to make a start, to hasten on”).
etymonline
hormone (n.)
"organic compound produced in animal bodies to regulate activity and behavior," 1905, from Greek hormon "that which sets in motion," present participle of horman "impel, urge on," from horme "onset, impulse," from PIE *or-sma-, from root *er- (1) "to move, set in motion." Used by Hippocrates to denote a vital principle; modern scientific meaning coined by English physiologist Ernest Henry Starling (1866-1927). Jung used horme (1915) in reference to hypothetical mental energy that drives unconscious activities and instincts. Related: Hormones.
