4 Definition

(text messaging, slang) Abbreviation of for.

(paper) Abbreviation of quarto, a standard size range for paper after folding and cutting (7.5"-10" x 10"-12.5").

(printing) Abbreviation of quarto, a standard size range for books, corresponding to the paper size.

(music) A meter of four quarter notes per measure.

(music) Subdominant, or the fourth scale degree.