Dictionary 1. (a.) Having all the sides equal; as, an equilateral triangle; an equilateral polygon.2. (n.) A side exactly corresponding, or equal, to others; also, a figure of equal sides. Thesaurus balanced coequal coordinate equal equiangular equidimensional equiproportional equisided equisized equispaced eurythmic even finished harmonious isometric proportioned regular symmetric uniform well-balanced well-set well-set-up |