# unitriangular

> English word · Adjective

## Definitions
1. Of a matrix: such that the entries on the main diagonal of a (upper or lower) triangular matrix are all 1.

## Etymology
From uni- + triangular.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/unitriangular