# sesquitertia

> English word · Noun

## Definitions
1. A ratio of 4 to 3.
2. A perfect fourth, an interval having the ratio of 1 to 1⅓, or 3 to 4.

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