Definition of orthocentre in English:

orthocentre

(also orthocenter)

noun

Geometry
  • The point of intersection of the three perpendiculars drawn from the vertices of a triangle to the opposite sides.

Origin

Mid 19th century. From ortho- + centre [adjective].

Pronunciation

orthocentre

/ˈɔːθə(ʊ)sɛntə/