Originally Posted by: equatorWell, 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/

From one of your links:

chromatic Melody or harmony built from many if not all twelve semitones of the octave. A chromatic scale consists of an ascending or descending sequence of semitones.

The scale may consist of ascending or descending semitones, but chromatics in a song do not necessarily have to ascend or descend in semitones.