isopleuron

English

Adjective

isopleuron (not comparable)

1. (obsolete, of a triangle) equilateral
   • 1712, Henry Curzon, The Universal Library Or, Compleat Summary of Science, page 152:

     "A Triangle is that which is comprehended by three Right Lines. It is distinguished from the Sides or from the Angles. In respect of the Sides a Triangle is, 1. The Isopleuron Triangle which hath three equal Sides; 2. An Isosceles which hath two equal Sides; and 3. A Scalenum whose three Sides are all unequal."