[f. prec. + -ITY, or ad. F. vulcanicité.]
1. = VOLCANICITY.
1873. R. Mallet, Palmieri’s Eruption Vesuvius, Title-p., An Introductory Sketch of the Present State of Knowledge of Terrestrial Vulcanicity.
1882. E. Hull, Contrib. Phys. Geog. Brit. Isles, 21 Vulcanicity has also played its part in the formation of rock-structures.
1885. Academy, 3 Oct., 225. He regards the thermal waters as representing a legacy of former vulcanicity.
2. The study of volcanic action.
1879. Rutley, Stud. Rocks, iii. 9. The branches of physical geology known as vulcanicity and seismology.
