noun an idea; a notion.
2. perception ·noun the quality, state, or capability, of being affected by something external; sensation; sensibility.
3. perception ·noun the act of perceiving; cognizance by the senses or intellect; apperhension by the bodily organs, or by the mind, of what is presented to them; discernment; apperhension; cognition.
4. perception ·noun the faculty of perceiving; the faculty, or peculiar part, of man's constitution by which he has knowledge through the medium or instrumentality of the bodily organs; the act of apperhending material objects or qualities through the senses;
distinguished from conception.