'Isosceles' definitions:
Definition of 'isosceles'
(from WordNet)
adjective
(of a triangle) having two sides of equal length
Definition of 'Isosceles'
From: GCIDE
- Isosceles \I*sos"ce*les\, a. [L., fr. Gr. ?; 'i`sos equal + ? leg.] (Geom.) Having two legs or sides that are equal; -- said of a triangle. [1913 Webster]