pierre ponce

French

Pronunciation

• IPA^(key): /pjɛʁ pɔ̃s/

Noun

pierre ponce f (usually uncountable, plural pierres ponces)

1. pumice (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)

   Synonym: ponce

See also

• tuf