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Added 9 October 2026

ellipse

/ɪˈlɪps/ noun

Latin root: ellīpsis Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about ellipse at Wordnik → Where our words come from →

A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it.
the sums of the distances from the foci to any point on an ellipse is constant

Origin

From French ellipse. Learned borrowing from Latin ellīpsis, itself a borrowing from Ancient Greek ἔλλειψις (élleipsis). Doublet of ellipsis.

From Wiktionary, via Kaikki.org (CC BY-SA)

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