The meaning of EXTRUSIVE is relating to or formed by geologic extrusion from the earth in a molten state or as volcanic ash. How to use extrusive in a sentence.

Extrusive rock refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out (extrudes) onto the surface as lava or explodes violently into the …

Definition of extrusive adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Both lava flows and pyroclastic debris (fragmented volcanic material) are extrusive; they are commonly glassy (obsidian) or finely crystalline (basalts and felsites).

Define extrusive. extrusive synonyms, extrusive pronunciation, extrusive translation, English dictionary definition of extrusive. adj. Derived from magma poured out or ejected at the earth's …

2 meanings: 1. tending to extrude 2. (of igneous rocks) formed from magma issuing from volcanoes or cracks in the earth's.... Click for more definitions.

EXTRUSIVE definition: tending to extrude. See examples of extrusive used in a sentence.

Jun 25, 2025 · Extrusive rock is formed when hot liquid rock from inside the earth flows or erupts (= is violently forced) outside the earth's crust (= outer layer) and becomes solid:

4 days ago · extrusive Add to list Definitions of extrusive adjective of rock material; forced out while molten through cracks in the earth's surface

Factsheet What does the adjective extrusive mean? There are three meanings listed in OED's entry for the adjective extrusive. See ‘Meaning & use’ for definitions, usage, and quotation …