- 1
In a fraction, one number sits above the line and one sits below. The numerator is the one above. In 5/6, 5 is the numerator and 6 is the denominator. The numerator tells you how many parts you have; the denominator tells you how many equal parts the whole was cut into. So 5/6 means five of those sixths. The word lives almost entirely in the maths classroom. Outside fractions you will hardly need it. People do not call the top of a score or a date a numerator. Keep it for 3/4, 2/5, and the rest.
分子
組成A learned borrowing from Late Latin numerātor, “one who counts,” from the same Latin family as number.
同家族的字
- numberboth from Latin numerus, “a number”
- denominatornot the same root, but the partner in a fraction: numerator above the line, denominator below
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。
numeratornoun/ˈnuː.məɹˌeɪ̯.təɹ/
- 1
arithmeticThe number or expression written above the line in a fraction (such as 1 in ½).
- 2
An enumerator; someone who counts.
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。