- 1
A polymath is someone who has really learned a lot about many different subjects, and can work in more than one of them — not just a person who has heard of many things. The old Greek pieces mean 'having learnt much': poly- is 'much/many', and the second piece is about learning, not about school mathematics. Teachers often point to Leonardo da Vinci: art, machines, the body. Though actually, people now use the word a bit loosely for anyone with two hobbies, and some writers say true polymaths were easier when 'everything a learned person should know' was a smaller pile. It is a kind, slightly word — more at home in a newspaper story about a life than in the playground. It is not the same as genius (that is about the power of a mind) and not the same as expert (that is about one field done very well).
博學者；通才
組成Learned borrowing from Ancient Greek polumathḗs 'having learnt much' (first seen in English in 1624): polús 'much/many' + manthánō 'to learn'. The -math here is 'learned', not 'mathematics'.
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
polymathnoun/ˈpɒlɪmæθ/
- 1
A person with extraordinarily broad and comprehensive knowledge.
- To be thought and held Polumathes and Polihistors.
- A bit of a polymath, he was crucial in the early development of the railways in this country.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。