vertex
noun /ˈvɜːteks/
/ˈvɜːrteks/
(plural vertices
/ˈvɜːtɪsiːz/
/ˈvɜːrtɪsiːz/
, vertexes)- (geometry) a point where two lines meet to form an angle, especially the point of a triangle or cone opposite the base
enlarge image - (specialist) the highest point or top of something
Word Originlate Middle English: from Latin, ‘whirlpool, crown of a head, vertex’, from vertere ‘to turn’.