psychogonic cubenoun the number 216 (= 6 × 6 × 6), a number held to be significant in Pythagorean thought as expressing the length in years of the supposed interval between successive reincarnations of a soul..
Origin
Early 19th century; earliest use found in Thomas Taylor (1758–1835), philosopher and translator. From psychogony + -ic, originally after Byzantine Greek ψυχογονικός.