minor scale

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A diatonic scale having a semitone between the second and third degrees and any of several intervalic arrangements above the fifth.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun music A diatonic scale based upon a relative major scale by changing its tonic note by three semitones.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a diatonic scale with notes separated by whole tones except for the 2nd and 3rd and 5th and 6th