The story
- Ancient Greekἐκ (ek)
- Ancient Greekἐντός (entós)
- Ancient Greekἐκτός (ektós)
- Englishecto-
- Ancient Greekὁρμῶν (hormôn)
- Englishhormone
- English todayectohormone
Etymology from Wiktionary, CC BY-SA 4.0.
ectohormone
Today it means: Any hormone that is secreted into an individual's environment and affects the behaviour or activity of another individual (of the same or different species) in the manner of a pheromone. Full definition →
English hormone ← Ancient Greek ὁρμῶν (hormôn)