Etymology
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extrusive (adj.)

"of or pertaining to extrusion or that which has been extruded," especially in geology, of rock that has been thrust out of the earth by volcanic activity, 1816, from Latin extrus-, past-participle stem of extrudere "thrust out; drive away" (see extrusion) + -ive. Related: Extrusively.

Entries linking to extrusive

extrusion (n.)

"the act of extruding; a thrusting or driving out, expulsion," 1530s, formed as a noun of action from past-participle stem of extrudere, from ex "out, out of" (see ex-) + trudere "to thrust, push," from PIE *treud- "to press, push, squeeze" (see threat).

-ive 
word-forming element making adjectives from verbs, meaning "pertaining to, tending to; doing, serving to do," in some cases from Old French -if, but usually directly from Latin adjectival suffix -ivus (source also of Italian and Spanish -ivo). In some words borrowed from French at an early date it has been reduced to -y (as in hasty, tardy).

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Definitions of extrusive

extrusive (adj.)
of rock material; forced out while molten through cracks in the earth's surface;
From wordnet.princeton.edu

Dictionary entries near extrusive

extro-

extroversion

extrovert

extrude

extrusion

extrusive

exuberance

exuberant

exudation

exude

exult

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