Definitions

1. adjective

relating to or denoting rocks or minerals that are rich in silica and aluminium oxides and have a low iron and magnesium content, typically being light-colored and having a high melting point.

“The felsic rocks formed as a result of volcanic activity in the region.”

2. noun

a type of igneous rock that is rich in silica and aluminium oxides.

“The geologist studied the felsic rocks to understand their formation and composition.”