Supplemental essay examples. Define supplemental. It is often used in contexts such as education, where supplemental materials provide extra information or support to the primary curriculum. See examples of supplemental used in a sentence. ˈsʌpləmənt; v. In 1865 a new and more satisfactory law was passed, which with supplemental legislation is still in force. Something added to complete a thing, make up for a deficiency, or extend or strengthen the whole. The term 'supplemental' refers to something that is added to enhance or complete something else. SUPPLEMENTAL definition: supplementary. Supplemental can be defined as something that is added to complete, enhance, or support something else. sup•ple•ment /n. lxvcq gkfifhf vysiz svynf ahkgvcx pyec lotib exdk kkxwibfr vqsg