Exceller

An Exceller (often stylized as exCELLer) is a portmanteau of "Excel" and "cell," and generally refers to a function or formula within Microsoft Excel or another spreadsheet program that performs a specific calculation on the contents of a cell or range of cells. The term is not formally defined within Microsoft Excel documentation but is used informally by users and online communities to describe complex or noteworthy formulas. It often carries the connotation of a formula that is both effective and cleverly constructed to solve a particular problem. Excellers can involve nested functions, array formulas, conditional logic, and advanced data manipulation techniques. The term can also be used to describe someone who is highly proficient in using Excel and creating such formulas.