# ecosphere

> English word · Noun

## Definitions
1. The portion of the atmosphere from sea-level to about 4000 meters in which it is possible to breathe without technological assistance.
2. The biosphere.

## Etymology
From eco- + -sphere.

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