1. equianharmonic - Noun
2. equianharmonic - Adjective
English Wikipedia has an article on:equianharmonicWikipedia
equianharmonic (not comparable)
(mathematics) equally anharmonic; specifically, whose anharmonic ratio is a cube root of unity
equianharmonic (plural equianharmonics)
(geometry) A set of four points whose cross ratio (or anharmonic ratio) is a cube root of 1.