Period
Term, Interval
noun
A period of time interval is still a period or interval of time.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
入院期間
a period of hospitalization
一定期間
a fixed period of time
試験期間
an exam period, a trial period
期間終了
end of a time period
期間内
within a period of time
期間中
during a period of time
一定の期間
a fixed period of time
キャンペーンの期間
campaign period
ビザの期間
visa duration
レンタル期間は十日間です。
The rental period is ten days.
今週はテスト期間中です。
This week is the test period.
このジーンズ、今なら期間限定で安いですよ。
This pair of jeans is cheap for a limited time now.