- The definition of uppercase is something written or printed with capital letters.
An example of uppercase used as an adjective is the phrase uppercase letter, which means the first letter of a person's name.
Wooden uppercase letters.Licensed from iStockPhoto
Origin: from their being kept inch(es) the upper of two cases of type
Used by arrangement with John Wiley & Sons, Inc.
adjective Abbr. uc or UC
- To put (type or text) in uppercase letters.
- To begin (a word) with an uppercase letter.
- upˈper·caseˈ noun