heptadiagonal

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Adjective

1. {{lb|en|of a|[[matrix]]}} Having [[nonzero]] [[entry|entries]] along the [[main]] [[diagonal]], the [[three]] diagonals on either side of the main diagonal{{,}} and the three diagonals near each corner, only.

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