Definition of tautochrone in English:

tautochrone

noun

Physics
  • A curve upon which a body moving under gravity or another force will reach the lowest point (or some other fixed point) in the same amount of time, regardless of the point from which it starts.

Origin

Late 18th century; earliest use found in Oliver Goldsmith (?1728–1774), author. From French tautochrone from post-classical Latin tautochronus, adjective from tauto- + ancient Greek χρόνος time.

Pronunciation

tautochrone

/ˈtɔːtəkrəʊn/