seventh

noun

1. the musical interval between one note and another seven notes away from it

2. one part in seven equal parts

Synonym: one-seventh

3. position seven in a countable series of things

adj

1. coming next after the sixth and just before the eighth in position

Synonym: 7th

1. 第七
The seventh item in a series is the one that you count as number seven.

e.g. I was the seventh child in a family of 11.
我在家里的 11 个孩子中排行老七。

2. 七分之一
A seventh is one of seven equal parts of something.

seventh

e.g. A million people died, a seventh of the population.
共有 100 万人丧生，占总人口的七分之一。

1. 第七：3. 第六sixth | 4. 第七seventh | 5. 第八eighth

2. 七度：sixth 六度 | seventh 七度 | octave 八度

3. 第七的：fifth 第五的 | seventh 第七的 | friendly 友好的

4. 第七;七分之一：second 第二 a.二等的 | seventh 第七;七分之一 | shall v.将要;必须;应