4 meaning

(music) Subdominant, or the fourth scale degree.
symbol
6
4
(text messaging, slang) Abbreviation of for.
preposition
5
4
(paper) Abbreviation of quarto, a standard size range for paper after folding and cutting (7.5"-10" x 10"-12.5").
noun
5
4
(printing) Abbreviation of quarto, a standard size range for books, corresponding to the paper size.
noun
4
4
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