con·trib·ute 
(kən-trĭbyt)
(kən-trĭbyt)v. con·trib·ut·ed, con·trib·ut·ing, con·trib·utes
v.tr.
1. To give or supply in common with others; give to a common fund or for a common purpose.
2. To submit for publication: contributed two stories to the summer issue.
v.intr.
1. To make a contribution: contributes to several charities.
2. To help bring about a result; act as a factor: Exercise contributes to better health.
3. To submit material for publication.
[Latin contribuere, contribūt-, to bring together : com-, com- + tribuere, to grant; see TRIBUTE.]
con·tribu·tive adj.
con·tribu·tive·ly adv.
con·tribu·tor n.