# outer space

> English word · Noun · IPA /ˌaʊtə ˈspeɪs/

## Definitions
1. A region outside of explored space.
2. Any region of space beyond limits determined with reference to boundaries of a celestial system or body, especially the region of space immediately beyond Earth's atmosphere; sometimes, space beyond Earth's solar system.
3. A bluish shade of black.

## Etymology
From outer + space.

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