Lithophyse

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Lithophyse \Lith"o*physe\, n. [Litho- + Gr. ? a flatus, air
     bubble.] (Min.)
     A spherulitic cavity often with concentric chambers, observed
     in some volcanic rocks, as in rhyolitic lavas. It is supposed
     to be produced by expanding gas, whence the name.
     [1913 Webster]