seventh

♦♦ sev|enth /s'evə/ (sevenths)
1 [ORD]
The seventh item in a series is the one that you count as number seven.
I was the seventh child in a family of 11.
2 [FRACTION]
A seventh is one of seven equal parts of something.
A million people died, a seventh of the population.sev|enth heav|en
[N-UNCOUNT] in N
If you say that you are in seventh heaven, you mean that you are in a state of complete happiness. (INFORMAL)