uppercase

adjective 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`
Found on https://www.encyclo.co.uk/local/20974

Uppercase

The capitals in a typeface. The name refers to the days of metal type, as the capitals were kept in the upper part of the type case.
Found on http://www.fontshop.com/glossary/

uppercase

[adj] - relating to capital letters which were kept in the top half of a compositor`s type case
Found on http://www.webdictionary.co.uk/definition.php?query=uppercase
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