Webster
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Webster’s Revised Unabridged Dictionary · 1913

Volcanic

Vol·can′ic (vŏl·kăn′ĭk), a. [Cf. F. volcanique, It. vulcanico.] 1. Of or pertaining to a volcano or volcanoes; as, volcanic heat.

2. Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa.

3. Changed or affected by the heat of a volcano.

Volcanic bomb, a mass ejected from a volcano, often of molten lava having a rounded form. — Volcanic cone, a hill, conical in form, built up of cinders, tufa, or lava, during volcanic eruptions. — Volcanic foci, the subterranean centers of volcanic action; the points beneath volcanoes where the causes producing volcanic phenomena are most active. — Volcanic glass, the vitreous form of lava, produced by sudden cooling; obsidian. See Obsidian. — Volcanic mud, fetid, sulphurous mud discharged by a volcano. — Volcanic rocks, rocks which have been produced from the discharges of volcanic matter, as the various kinds of basalt, trachyte, scoria, obsidian, etc., whether compact, scoriaceous, or vitreous.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.