the act of taking part in an activity or event, or the way in which you take part in it [= participation]:
School officials say they welcome parental involvement.
His new book examines the United States' involvement in World War II.
Harris's possible involvement with a series of robberies
something that you take part in or spend time doing:
her political involvements
the feeling of excitement and satisfaction that you get from an activity
Weaver admitted a strong emotional involvement in her client's case.
4 [uncountable and countable]
a romantic relationship between two people, especially when they are not married to each other
Donna knew nothing of her husband's involvement with another woman.