Men″tal, a. [F., fr. L. mentalis, fr. mens, mentis, the mind; akin to E. mind. See Mind.] Of or pertaining to the mind; intellectual; as, mental faculties; mental operations, conditions, or exercise.
What a mental power
This eye shoots forth! Shak.
Mental alienation, insanity. — Mental arithmetic, the art or practice of solving arithmetical problems by mental processes, unassisted by written figures.