half step
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See also: half-step
English
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f1/Piano_Keyboard.jpg/220px-Piano_Keyboard.jpg)
Noun
[edit]half step (plural half steps)
- (music, US) The distance between two tones. In 12-tone equal temperament, its frequency ratio is , or about 1.059 or 18/17.