Isosceles definition

ī-sŏsə-lēz
Having at least two equal sides.

An isosceles triangle.

adjective
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(geom.) Designating a figure, esp. a triangle, with two equal sides.
adjective
2
1
Of or relating to a geometric figure having at least two sides of equal length.
2
1
(geometry) Having two sides of equal length, used especially of an isosceles triangle or isosceles trapezoid.
adjective
2
1
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Origin of isosceles

  • Late Latin īsoscelēs from Greek īsoskelēs īso- iso- skelos leg

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek ἰσοσκελής (isoskelēs), from ἴσος (isos, “equal”) + σκέλος (skelos, “leg”); another word of the same root is scalene.

    From Wiktionary