pumice
A light, porous type of pyroclastic igneous rock, formed during explosive volcanic eruptions when liquid lava is ejected into water or air as a froth containing masses of gas bubbles, which are frozen into the rock as the lava solidifies.
A kind of
- rock
Related words
- pumicer
- pumicite
- pumiceous
- pumice stone
- pumicelike
- pumice raft
Where this comes from
This definition is adapted from “pumice” on Wiktionary, by its contributors; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.