Hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
More example sentences
- Bombs are pieces of molten lava that are thrown out of the volcano.
- They include lavas and volcaniclastic rocks of basaltic and andesitic composition together with cogenetic gabbros, plagiogranites and granites.
- The tuffs and lava were derived from a nearby andesitic volcanic centre.