tautochrone

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noun

A curve, such that a weighted body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it begins to fall.

“An inverted cycloid with its base horizontal is a tautochrone.”

Scrabble 16

Meanings

nountautochrone (plural tautochrones)

plural tautochrones

  1. mathematicsA curve, such that a weighted body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it begins to fall.

    An inverted cycloid with its base horizontal is a tautochrone.

    Synonyms: tautochrone curve

Synonyms & antonyms

nounA curve, such that a weighted body, descending along it by the action of gravity, will always arrive at the lowest point in the same time, wherever in the curve it begins to fall.

Origin

  1. Ancient Greekταὐτός“the same”
  2. Englishtautochrone

From Ancient Greek ταὐτός (tautós, “the same”) + χρόνος (khrónos, “time”).

Full word history & related roots →

Rhymes & wordplay

Anagrams

Cite this entry
APA

tautochrone. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/tautochrone

MLA

“tautochrone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tautochrone. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “tautochrone,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/tautochrone.

Source: tautochrone on Wiktionary, CC BY-SA 4.0.