Editing Yevamot (section)

==== Fundamentals in the Chapter "HaIsha SheNiset" ====
A zonah (harlot) is a married woman who committed adultery with a man who is not her husband.

If this occurred willingly, the woman is forbidden to her husband and it is forbidden for her to live with him anymore. If it was through coercion, she is permitted to her husband - if she is the wife of a Israelite, but the wife of a Kohen who was raped is forbidden to her husband. A married woman for whom one witness came and testified that her husband died is permitted to remarry, but she must thoroughly check if her husband has indeed died.

In a case where she remarried and it eventually became clear that her husband had not died, she is considered rabbinically as a zonah and is forbidden to her husband.