It's related to the Greek word "aisthēsis" which means "perception" or "sensation".
This root is found in many English words related to art, beauty, and sensory experience, like:
* Aesthetic: relating to beauty or artistic taste
* Aesthete: a person who has a special appreciation for art and beauty
* Anesthesia: a loss of sensation, often used in medicine
* Aestheticism: a movement that emphasizes the importance of beauty in art and life