1. Half a tone.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• semeone,
• seciton,
• sediton,
• soemtone,
• sometone,
• emiton,
• oxitone,
• semite,
• semitine,
• semitons,
• smitone,
• semitoe,
• semiton,
• semitonne,
• semi tone,
• belibone,
• semilune,
• demiloune,
• demilune,
• demmitone

• send on.

The adjective form of the word "semitone" is "semitonal".

The plural of the "semitone" can be the "semitones".

The singular of the "semitone" can be the "semitone".