Hypertext Webster Gateway: "isosceles"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
From WordNet (r) 1.7 (wn)
isosceles
adj : (of a triangle) having two sides of equal length
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