aesthetic esthet=feeling es=ex thet-sense
pertaining to a sense of the beautiful or to the science of aesthetics.
having a sense of the beautiful; characterized by a love of beauty.
pertaining to, involving, or concerned with pure emotion and sensation as opposed to pure intellectuality.
a philosophical theory or idea of what is aesthetically valid at a given time and place: the clean lines, bare surfaces, and sense of space that bespeak the machine-age aesthetic.
adj. 美的；美學的；審美的，具有審美趣味的

例句：
The professor advanced a new aesthetic theory.
那位教授提出了新的美學理論。

esthetical = aesthetical
adj. 美的，富美感的；美術的

aesthete
One who cultivates an unusually high sensitivity to beauty, as in art or nature.
One whose pursuit and admiration of beauty is regarded as excessive or affected.
n.審美家, 美學家; 唯美主義者

aesthesia
The ability to feel or perceive sensations
n.知覺, 感覺, 感覺力, 知覺力

aestheticism
Devotion to and pursuit of the beautiful; sensitivity to artistic beauty and refined taste.
The doctrine that beauty is the basic principle from which all other principles, especially moral ones, are derived.
n.審美感; 唯美主義; 藝術感

aesthetics
(used with a sing. verb) The branch of philosophy that deals with the nature and expression of beauty, as in the fine arts. In Kantian philosophy, the branch of metaphysics concerned with the laws of perception.
(used with a sing. verb) The study of the psychological responses to beauty and artistic experiences.
(used with a sing. or pl. verb) A conception of what is artistically valid or beautiful: minimalist aesthetics.
(used with a sing. or pl. verb) An artistically beautiful or pleasing appearance:
n.
1. 美學, 審美學; 美的哲學
2. 感(官)性(能), 美感性

背景知識

美學一詞來源于希臘語aesthesis。最初的意義是“對感觀的感受”。由德國哲學家亞歷山大·戈特利布·鮑姆加登首次使用的。他的《美學（Aesthetica）》一書的出版標志了美學作為一門獨立學科的產生。直到19世紀，美學在傳統古典藝術的概念中通常被定義為研究“美”的學說。現代哲學將美學定義為認識藝術，科學，設計和哲學中認知感覺的理論和哲學。一個客體的美學價值并不是簡單的被定義為“美”或者“丑”，而是去認識客體的類型和本質。

anesthetic
Relating to or resembling anesthesia.
Causing anesthesia.
Insensitive.
An agent that causes loss of sensation with or without the loss of consciousness.
Something likened to this in effect
adj.
1. 感覺缺失的
2. 麻醉的
n. 麻醉藥[劑]

例句：
It would have to be done under anesthetic.
這個只能在麻醉的情況下做。