tetractys

Fetched 2026-10-26 (cache).

Synonyms: retracts, detracts, tetract

Antonyms: retracts, detracts, tetract

Related words from Datamuse; suggestions, not definitions.

Noun

1. A [[triangular]] [[figure]] consisting of ten [[point]]s arranged in four rows, representing the fourth [[triangular number]] and having [[mystical]] significance to the [[Pythagorean]]s.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.