pierre ponce

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French

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French Wikipedia has an article on:
Wikipedia fr

Pronunciation

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Noun

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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

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