The waiting period of a divorced woman in Islam is called "iddah". It is a specific period of time during which a woman who has been divorced must wait before she can remarry or engage in any other sexual activity.
The length of the iddah period varies depending on the circumstances of the divorce. If the divorce was initiated by the husband and he has not yet had sexual intercourse with his wife, the iddah period is three menstrual cycles. If the husband has had sexual intercourse with his wife, the iddah period is three menstrual cycles, or three lunar months (approximately 90 days).
During the iddah period, the divorced woman is considered to be in a state of mourning and is not allowed to leave her home except for necessary reasons. The purpose of the iddah period is to ensure that the woman is not pregnant and to allow time for any potential reconciliation between the couple.
In summary, iddah is the waiting period that a divorced woman must observe before she can remarry or engage in any other sexual activity. Its length depends on the circumstances of the divorce, and during this period, the woman is considered to be in a state of mourning and must remain in her home except for necessary reasons.