Originally Posted by: Cryptic Excretionschromatic
adj
2: based on a scale consisting of 12 semitones; "a chromatic scale"
http://dictionary.reference.com/search?q=chromatic
It doesn't say anything about needing to be in half-step incriments to be chromatic.
Well, you should try a music dictionary instead:
http://library.thinkquest.org/2791/MDCTARY/A-C.htm
http://www.wqxr.com/cgi-bin/iowa/cla/learning/grove.html?record=1876
http://www.essentialsofmusic.com/glossary/c.html
http://www.bsokids.com/kids/sound_off/music_dictionary.asp
http://www.music.vt.edu/musicdictionary/