jafnhallaferill

Icelandic

Etymology

From jafn (“equal”) + halli (“grade, inclination, slope”) + ferill (“a curve, line, path or trajectory”).

Noun

jafnhallaferill m (genitive singular jafnhallaferils, nominative plural jafnhallaferlar)

1. (mathematics) an isocline, any of a series of lines having the same slope