con·trib·ute [kuhn-trib-yoot] verb,-ut·ed, -ut·ing.
–verb (used with object)
1. to give (money, time, knowledge, assistance, etc.) to a common supply, fund, etc., as for charitable purposes.
2. to furnish (an original written work, drawing, etc.) for publication: to contribute stories to a magazine.
–verb (used without object)
3. to give (money, food, etc.) to a common supply, fund, etc.: He contributes to many charities.
4. to furnish works for publication: He contributed to many magazines.
—Idiom
5. contribute to, to be an important factor in; help to cause: A sudden downpour contributed to the traffic jam.