[1] : The Collaborative International Dictionary of English v.0.48

chromatic \chromat"ic\, a. l. chromaticus, gr. ?, suited for
   color, fr. ?, ?, color; akin to ? color, ? skin, color of the
   skin.
   1. relating to color, or to colors.
      1913 webster

   2. mus. proceeding by the smaller intervals half steps or
      semitones of the scale, instead of the regular intervals
      of the diatonic scale.
      1913 webster

   note: the intermediate tones were formerly written and
         printed in colors.
         1913 webster

   chromatic aberration. opt. see aberration, 4.

   chromatic printing, printing from type or blocks covered
      with inks of various colors.

   chromatic scale mus., the scale consisting of thirteen
      tones, including the eight scale tones and the five
      intermediate tones.
      1913 webster
see also:
chromatic aberration aberration 4 chromatic printing chromatic scale 

[2] : WordNet (r) 2.0

chromatic scale
     n : a 12-note scale including all the semitones of the octave

Chromatic >> C Words
Chromatic, definition of term: Chromatic
chromatic_pag1.html

Chromatic Aberr >> C Words
Chromatic Aberr, definition of term: Chromatic Aberr
chromatic+aberr_pag1.html

Musical Scale >> M Words
Musical Scale, definition of term: Musical Scale
musical+scale_pag1.html

Ph Scale >> P Words
Ph Scale, definition of term: Ph Scale
ph+scale_pag1.html

Major Scale >> M Words
Major Scale, definition of term: Major Scale
major+scale_pag1.html

Diatonic Scale >> D Words
Diatonic Scale, definition of term: Diatonic Scale
diatonic+scale_pag1.html

Beaufort Scale >> B Words
Beaufort Scale, definition of term: Beaufort Scale
beaufort+scale_pag1.html

Fish Scale >> F Words
Fish Scale, definition of term: Fish Scale
fish+scale_pag1.html