The word "Trigonous" is derived from the Greek word "Trigonon", meaning "triangle." It is an adjective that describes something having three angles or sides. There are several synonyms for "Trigonous," including triangular, three-sided, trigonal, and trilateral. These words are often used interchangeably depending on the context, but they all convey the same idea of a three-sided shape. Other related terms that you may come across include "triangular prism," "triangular pyramid," and "triangular lattice." Overall, these synonyms enhance our vocabulary and allow us to more precisely describe objects and shapes that are Trigonous in nature.