tridiagonal

Fetched 2026-10-26 (cache).

Synonyms: triagonal

Antonyms: triagonal

Related words from Datamuse; suggestions, not definitions.

Adjective

1. {{lb|en|linear algebra|of a [[matrix]]}} Having [[nonzero]] [[element]]s only in the main [[diagonal]] and the diagonals directly above and below it.

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