Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
Music the difference in pitch between any two immediately adjacent keys on the piano; half of a whole tone
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An interval equal to a half tone in the standard diatonic scale. Also called half step, halftone.
- semˌi·toˈnal adjective
- semˌi·toˈnal·ly adverb