Question

semitone The ancient piano in the great music room had been allowed to fall terribly out of tune, with every note at least a semitone flat. semitone*

Accepted Answer

The tone at a half step. A semitone (sometimes called a half tone or a half step) is the distance from a white key to a neighboring black key on the piano keyboard—for example, from G to G-sharp or from E to E-flat. In an octave (from G to the next G above, for instance), there are twelve semitones. Semitones are the smallest intervals that are used intentionally in almost any of the music you'll normally hear. Two semitones equal a whole tone—the distance from G up to A or from E down to D, for example

word	semitone
definition	The tone at a half step.
eg_sentence	The ancient piano in the great music room had been allowed to fall terribly out of tune, with every note at least a semitone flat.
explanation	A semitone (sometimes called a half tone or a half step) is the distance from a white key to a neighboring black key on the piano keyboard—for example, from G to G-sharp or from E to E-flat. In an octave (from G to the next G above, for instance), there are twelve semitones. Semitones are the smallest intervals that are used intentionally in almost any of the music you'll normally hear. Two semitones equal a whole tone—the distance from G up to A or from E down to D, for example
IPA	semitone*

G Semitone Half Tone Piano Music Distance Key