ˌ ̷ ̷ ̷ ̷ˈfīsə noun
( plural lithophy·sae -ˌsē)
Etymology: New Latin, from lith- + Greek physa bubble — more at pustule
: a spherulitic cavity often with concentric chambers that is observed in some rhyolitic lavas
• lith·o·phy·sal | ̷ ̷ ̷ ̷| ̷ ̷s ə l adjective