- 1分母
In a fraction, the denominator is the number under the line. In 3/4, four is the denominator: it tells you how many equal parts the whole was cut into. The number on top is the , which tells you how many of those parts you have. So 3/4 means “three of four equal parts.” You need a common denominator when you add or compare fractions — a shared bottom number so the parts are the same size. Though actually, people also stretch this in ordinary talk: “the common denominator” can mean the one thing several people or problems share. That everyday use grew out of the school meaning, and it is very common. The word itself is maths-class English first, then metaphor.
From the word’s history
Borrowed from Late Latin denominator.
借自晚期拉丁文 dēnōminātor「命名者」，分數裡給名的那個數。
組成A learned borrowing from Late Latin dēnōminātor, “that which names.” In a fraction, the bottom number names the kind of part (thirds, fifths, and so on).
同家族的字
- denominatesame Latin root “to name”
- denominationsame naming family; also a unit of money
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
denominatornoun/dɪˈnɒmɪneɪtə(ɹ)/
- 1
arithmeticThe number or expression written below the line in a fraction (such as 2 in ½).
- common denominator
- lowest common denominator
- 2
One who gives a name to something.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。