This meaning talks about a part of time. It can be short or long. People use it to talk about days, months, or years.
We stayed there for a short period.
The school day starts after the first period.
This meaning means the time when a woman’s body releases blood every month. It is a normal part of growing up.
She began her period last week.
Periods usually last three to seven days.
This meaning is used for long times in history or earth science. It shows a time with special features.
The Jurassic period was millions of years ago.
Life changed a lot during that period.
In some sports, the game is divided into periods. Each period is a part of the total time to play.
The hockey game has three periods.
We won the first period in the match.
This meaning is used when someone wants to stop an argument. It means no more discussion is possible.
That is the rule, period.
I will not change my mind, period.