Rectilineal
Pronunciation : Rec`ti*lin"e*al, Rec`ti*lin"e*ar (-ln"*r)
Part of Speech : a.
Etymology : [Recti- + lineal, linear.]
Definition : Defn: Straight; consisting of a straight line or lines; bounded by straight lines; as, a rectineal angle; a rectilinear figure or course. -- Rec`ti*lin"e*al*ly, adv. -- Rec`ti*lin"e*ar*ly, adv.
Source : Webster's Unabridged Dictionary, 1913