Antipole
/ˈæn.tɪˌpoʊl/noun
A point associated with a line and a circle in certain geometrical constructions, typically defined through perpendicularity and inversion.
Did you know?The word combines Greek anti-, meaning “opposite” or “against,” with pole, a word descended from an ancient root associated with turning and revolving around an axis.
Etymological Timeline
Proto-Indo-European
PIE
*h₂ent-i
“Against, facing, or on the opposite side”
Proto-Indo-European
PIE
*kʷel-
“To turn, revolve, or move around”
Ancient Greek
Greek
antí
“Against, opposite, or in return”
Ancient Greek
Greek
pólos
“Pivot, axis, or the celestial pole”
19th Century
English
antipole
“A geometrical point constructed as an opposite or corresponding pole”
Modern English
English
antipole
“A specialized term in geometry for a point defined in relation to a line and circle”