# trichotomous

> English word · Adjective

## Definitions
1. Divided into three parts, or into threes; forking three ways.
2. Such that, for all x and y in X, and for a binary relation R, exactly one of xRy, yRx or x=y holds.

## Etymology
From trichotomy + -ous. Modelled on dichotomous.

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