† triˈangulary,a.Obs. [f. as triangular: see -ary2.] = triangular 1. 1622Mabbe tr.Aleman's Guzman d'Alf. ii. 191 A kinde of triangulary sayle.1653Urquhart tr.Rabelais i. xliv. 197 Lifting up in the upper part of the scul the two triangularie bones called sincipital.