Definition & Meaning of "double sharp"

What is a "double sharp"?

A double sharp is a musical symbol that indicates a note should be raised by two half steps, or two semitones. It is represented by an "x" or by placing two sharp symbols (♯♯) before the note. For example, if the note is F, applying a double sharp would change it to F♯♯, which sounds the same as G. Double sharps are used to adjust the pitch of a note more significantly than a single sharp, and they are often found in complex musical passages or specific key signatures.