[ad. F. volcanicité, or f. VOLCANIC a. + -ITY. Cf. VULCANICITY.] Volcanic action, activity or phenomena.
1836. Macgillivray, Trav. Humboldt, xxvii. 411. Volcanicity, or the influence which the interior of our planet exercises upon its external envelope.
1883. Athenæum, 25 Aug., 245. One of those earthquakes called perimetric, that are due to a local volcanicity.
