# semiorthogonal

> English word · Adjective

## Definitions
1. Having the property that every subcategory is in the set of orthogonal subcategories of every higher order subcategory.
2. Either columnwise orthogonal (having the property that M'M is an identity matrix) or rowwise orthogonal (having the property that MM' is an identity matrix).
3. Orthogonal to the corresponding approximation space.

## Etymology
From semi- + orthogonal.

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