ɛkˈstrʌɪvɪs

Definitions

1. adjective

of or relating to rocks or minerals that have been ejected from a volcano and cooled rapidly on the surface

“The geologist studied the extrusive rocks to understand the region’s volcanic history.”

2. noun

rocks or minerals that have been ejected from a volcano and cooled rapidly on the surface

“The extrusive rocks in the area were formed as a result of ancient volcanic activity.”

3. noun

a type of volcanic rock that has been ejected from a volcano and cooled rapidly on the surface

“The geologist collected samples of various extrusive rocks to analyze their composition.”