Life stage

Life stage is a person's major concern, such as going through a divorce, going into a second marriage, taking care of an older parent, deciding to cohabit with another person, deciding to buy a new home, and so on.

Definition

According to Marketing Management by Keller and Kotler (15th edition),

Life stage. A person's major concern, such as going through a divorce, going into a second marriage, taking care of an older parent, deciding to cohabit with another person, deciding to buy a new home, and so on.