What does "heptadiagonal" mean?

Having nonzero entries along the main diagonal, the three diagonals on either side of the main diagonal, and the three diagonals near each corner, only.

Heptadiagonal

adj

adj ·Rare ·Advanced level

Definitions

Adjective

1
Having nonzero entries along the main diagonal, the three diagonals on either side of the main diagonal, and the three diagonals near each corner, only. not-comparable

Etymology

From hepta- + diagonal.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.