- 1nB2
/ˈkætəɡɔːri/ · /ˈkætəɡəri/
A group of people or things that have something important in common, used to help organize or sort them.
類別／種類
複數 categories
核心畫面
A labelled box you sort people or things into because they share something important.
可以想成一個貼了標籤的「箱子」：你把有某個重要共同點的人或東西，全歸到同一個箱子裡，方便整理、分類、比較。重點在那個…更多收起
可以想成一個貼了標籤的「箱子」：你把有某個重要共同點的人或東西，全歸到同一個箱子裡，方便整理、分類、比較。重點在那個「共同點」——同一個 category 裡的成員，一定共享某個關鍵特徵，所以才被放在一起。原始詞典資料2 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。
categorynoun/ˈkæt.ɪ.ɡ(ə.)ɹi/
- 1
A group, often named or numbered, to which items are assigned based on similarity or defined criteria.
- This steep and dangerous climb belongs to the most difficult category.
- I wouldn’t put this book in the same category as the author’s first novel.
- 2
mathematicssciencesA collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative.
- One well-known category has sets as objects and functions as arrows.
- Just as a monoid consists of an underlying set with a binary operation "on top of it" which is closed, associative and with an identity, a category consists of an underlying digraph with an arrow composition operation "on top of it" which is transitively closed, associative, and with an identity at each object. In fact, a category's composition operation, when restricted to a single one of its objects, turns that object's set of arrows (which would all be loops) into a monoid.
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。