Definition of uppercase in English:


(also upper case)


  • Capital letters as opposed to small letters (lowercase)

    ‘the keywords must be in uppercase’
    [as modifier] ‘uppercase letters’
    • ‘It's especially important when going over the username and password, letter by letter, number by number, upper case by lower case - because, as the user manual says, ‘It's vital to type in the correct username and password’.’
    • ‘To keep things simple, the file uses only upper case letters, digits and punctuation marks, and does not include spaces.’
    • ‘They might not know their upper-case letters from their lower, but today's online activists certainly know how to disrupt the enemy.’
    • ‘There are warnings against the use of all upper-case text as this impacts negatively on readability.’
    • ‘The test selected requires the child to recognize whether isolated upper case letters and numerals are correctly oriented, and measures memory for the correct visual form of letters and numerals.’
    • ‘As an editor, this happens to drive me crazy (along with the lack of upper-case letters where one would normally expect them).’
    • ‘And on that note, I give you the lovely e-mail I received this evening from ‘Greg A.'. At least he avoided upper-case type.’
    • ‘The first letter of this code is upper case and the second, if present, is lower case.’
    • ‘Naturally my eye was drawn to this word, 5 cm long and 1.5 cm high, in red upper case letters.’
    • ‘The game can be used to reinforce number recognition, letter recognition, the difference between upper case and lower case letters, letter sounds, colors, etc.’
    • ‘Letters were presented in upper case, white Arial font on a black background.’
    • ‘You should have passwords that are at least eight characters long - consisting of a mixture of numbers, upper case and lower case letters.’
    • ‘X's and O's were upper-case letters, 4.0 mm high and 2.0 mm wide.’
    • ‘The title page of the book has its name printed in upper case, as was the fashion at the time, but it is an achievement worth capital letters.’
    • ‘Often in fine but upper-case print, most preprinted prescription labels include the words.’
    • ‘But as the k was typed in lower case, it was mysteriously replaced by an uppercase letter.’
    • ‘She's always liked us to read to her, and she's been practising her upper-case letters and trying to figure out how to spell words for a long time, but reading stuff she didn't already know frustrated her.’
    • ‘The specification sets out things such as standard data locations, standard fonts, upper case lettering, and types of human-readable data.’


Referring originally to two type cases positioned on an angled stand, the case containing the capital letters being higher and further away from the compositor.