American Heritage Dictionary
(3)
Century Dictionary
(8)
GNU Webster's 1913
(2)
WordNet
(2)
Elsewhere on the web
The second thing about it was that it appeared to be perfectly equilateral, each side exactly the same as the other two.— Signs of the Times
Identify attributes for classifying triangles (e.g., two equal sides for the isosceles triangle, three equal sides for the equilateral triangle, right angle for the right triangle).— Recently Uploaded Slideshows
There have been numerous sightings of a small 30 ft on a side equilateral, flying triangle in the vicinity of the Warton site.— UFO and Paranormal News
All three sides of the same length, three angles equal (60 degrees). quadrilateral, quadrangle, tetragon quadrangle and tetragon are not common usages parallelogram both pairs of non-adjacent sides are parallel rhombus equilateral (also a parallelogram) decagon— Citizendium, the Citizens' Compendium - Recent changes [en]
Unless Windows 7 is equilateral to the second coming of Christ ...— FiringSquad Latest Gaming and Industry News

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