sup·ple·men·tal 
/ˌsʌpləˈmɛntl̟/ adjective
/ˌsʌpləˈmɛntl̟/ adjective chiefly US : added to something else to make it complete
▪ She receives a supplemental income every month from the government. ▪ supplemental information
▪ She receives a supplemental income every month from the government. ▪ supplemental information
