# sesquioctave

> English word · Noun · IPA /ˌsɛs.kwiˈɒktɪv/

## Definitions
1. A ratio of 9 to 8, especially in music.

## Etymology
From sesqui- (“one and a half”) + octave.

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