1. the ability to see, hear, or become aware of something through the senses
2. the way in which something is regarded, understood, or interpreted
3. intuitive understanding and insight

Examples

• Her perception of color was affected by the dim lighting.
• The drug altered his perception of reality.
• Public perception of the company improved after the charity event.
• There’s a common perception that all teenagers are rebellious.
• His perception of the situation was completely different from mine.
• She has great perception when it comes to understanding people’s emotions.
• The artist’s perception of beauty was reflected in her paintings.