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orthocentre

A form of orthocenter — One of the centers (UK:centres) of a triangle, defined as being the intersection of its three altitudes; in an acute triangle, it is inside the triangle; in an obtuse triangle, it is outside the triangle; in a right-angled triangle it is the vertex opposite the hypotenuse and so is on the triangle.

OriginEnglish centre ← Ancient Greek ὀρθός (orthós) ← Proto-Hellenic *ortʰwós →

Scrabble 16

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Meanings

nounorthocentre (plural orthocentres)

plural orthocentres · alternative orthocenter

alternativeAlternative form of orthocenter.

Origin

Proto-Indo-European*h₃er-
Proto-Indo-European*dʰeh₁-
Proto-Indo-European*h₃érdʰeti?
Proto-Indo-European*h₃erdʰ-
Proto-Hellenic*ortʰwós
Ancient Greekὀρθός (orthós)
Englishortho-
Englishcentre
Englishorthocentre

From ortho- + centre.

Full word history & related roots →

Rhymes & wordplay

Rhymes with orthocentre

center enter centre mentor inventor presenter renter reenter venter stentor tormentor augmenter preventer dissenter tenter fermenter indenter dementor fermentor accentor incenter absenter assenter barycentre

Anagrams

Cite this entry

APA

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

MLA

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

Chicago

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

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