# pyrosphere

> English word · Noun

## Definitions
1. The zone of igneous activity and lava formation, situated between the lithosphere and barysphere.

## Etymology
From pyro- + -sphere.

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