con ‧ trib ‧ u ‧ to ‧ ry /kənˈtrɪbjət ə ri, kənˈtrɪbjʊt ə ri $ -tɔːri/ BrE AmE adjective
[ Word Family: noun : ↑ contribution , ↑ contributor ; verb : ↑ contribute ; adjective : ↑ contributory ]
1 . [only before noun] being one of the causes of a particular result:
Smoking is a contributory factor in lung cancer.
2 . a contributory ↑ pension or insurance plan is one that is paid for by the workers as well as by the company they work for OPP noncontributory