9 letters · 16 points in Scrabble
noun a straight line that is the limiting value of a curve; can be considered as tangent at infinity
origincirca 1650, from Ancient Greek ἀσύμπτωτη (asúmptōtē), the feminine of Apollonius Pergaeus' (circa 200 BC) Ancient Greek adjective ἀσύμπτωτος (asúmptōtos, “not falling together”), from ἀ- (a-, “not”) + συν- (sun-, “together”) + πτωτός (ptōtós, “fallen”). See also a-, syn-, -ote.
Etymology from Wiktionary, CC BY-SA 3.0