# first-order

> English word · Adjective

## Definitions
1. Of one of a series of models, languages, relationship, forms of logical discourse, etc., being the simplest one or the first in a sequence.
2. Of fundamental importance.

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