volcanicity /-kə-nisˈi-ti/ noun

Volcanic action or phenomena

volcanism and volcanist noun (also with caps) see vulcanism and Vulcanist under Vulcan

volcanizāˈtion or volcanisāˈtion noun

volˈcanize or volˈcanise transitive verb

To subject to the action of volcanic heat

volˈcanized or volˈcanised adjective

volcanologˈical adjective

volcanolˈogist noun

A vulcanologist

volcanolˈogy noun

Vulcanology

volcanic ash or volcanic ashes see under ash¹

volcanic bomb see under bomb

volcanic dust noun

Fine particles of powdered rock blown out from a volcano

volcanic glass noun

Rock without a crystalline structure, as obsidian, pumice, etc, produced by rapid cooling of molten lava

volcanic mud or volcanic sand noun

Volcanic ash that has been deposited under water and sorted and stratified

volcanic rocks plural noun

Those formed by volcanic agency