equally tempered scale
equally tempered scale[¦ē·kwə·lē ¦tem·pərd ′skāl]
A musical scale formed by dividing the octave into 12 equal intervals and selecting from the resulting notes; thus, the frequency ratio between any two successive notes is exactly 2¹⁄₁₂or 2⅙. Also known as equitempered scale.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.