n.[C]

1. 時期，期間
   This was the most difficult period of his life.

   這是他一生中最艱難的時期。

2. 時代
   The period of the Civil War

   美國南北戰爭年代

3. （一堂）課，課時
   We have four periods of English a week.

   我們每星期上四節英語課。

4. 週期；生理期，月經
5. 【美】句號
6. 複合句；完整句
7. 【數】循環節；週期
8. 【音】樂段

a.

1. 某一時代（特有）的

int.

1. （用於句末，表示斷定的口氣）就這樣，沒什麼好說的
   I love him, period!

   我愛他，就是這樣！

n.

1. a length or portion of time.
   ▸a major division of geological time that is a subdivision of an era and is itself subdivided into epochs.
2. each of the set divisions of the day in a school.
3. (also menstrual period) a monthly flow of blood and other material from the lining of the uterus, occurring in women of childbearing age when not pregnant.
4. N. Amer. a full stop.
5. Physics  the interval of time between successive occurrences of the same state in an oscillatory or cyclic phenomenon.
6. Mathematics  the interval between successive equal values of a periodic function.
7. Chemistry  a set of elements occupying a horizontal row in the periodic table.
8. Astronomy  the time taken by a celestial object to rotate about its axis, or to make one circuit of its orbit.
9. Rhetoric  a complex sentence, especially one consisting of several clauses, constructed as part of a formal speech or oration.

adj.

[名]

1. 句號。