# semidefinite

> English word · Adjective

## Definitions
1. Not entirely definite; somewhat vague or undefined.
2. Describing a bilinear form, over a vector space, that is either always positive or always negative.

## Etymology
From semi- + definite.

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