vertex

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the point of intersection of lines or the point opposite the base of a figure
noun the highest point (of something)

Etymology

Late Middle English, borrowed from Latin vertex (“whirl, eddy; top, crown, peak, summit”). Doublet of vortex.

In classic literature

(Vortex is another form of vertex.) — Orthography : $b as outlined in the state course of study for Illinois : seventh and eighth years, Elmer W. (Elmer Warren) Cavins
{From vertex to root of nose 9.2 10.0 6.} — The North-West Amazons: Notes of some months spent among cannibal tribes, Thomas Whiffen
When viewed from the vertex the left cerebral hemisphere is intact. — Report of the President's Commission on the Assassination of President John F. Kennedy, United States. Warren Commission

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