2sup·ple·ment 
/ˈsʌpləˌmɛnt/ verb
sup·ple·ments; sup·ple·ment·ed; sup·ple·ment·ing /ˈsʌpləˌmɛnt/ verb [+ obj] : to add something to (something) in order to make it complete
▪ He sells his paintings to supplement his income. = He supplements his income by selling his paintings. ▪ She began supplementing her diet with vitamins.
▪ He sells his paintings to supplement his income. = He supplements his income by selling his paintings. ▪ She began supplementing her diet with vitamins.
— sup·ple·men·ta·tion /ˌsʌpləˌmɛnˈteɪʃən/ noun [noncount]
/ˌsʌpləˌmɛnˈteɪʃən/ noun [noncount]
