uppercase

Noun uppercase has 1 sense

• uppercase(n = noun.communication) capital, capital letter, majuscule, upper-case letter - one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis; "printers once kept the type for capitals and for small letters in separate cases; capitals were kept in the upper half of the type case and so became known as upper-case letters"
is a kind of character, grapheme, graphic symbol
has particulars: small cap, small capital
Antonym: lowercase

Adjective uppercase has 1 sense

• uppercase(a = adj.all) - relating to capital letters which were kept in the top half of a compositor's type case; "uppercase letters; X and Y and Z etc"
Antonym: lowercase