# half-open

> English word · Adjective

## Definitions
1. partially open; ajar
2. (referring to an interval on the real line) containing only one of its endpoints

## Etymology
From half- + open.

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