Adjective
Relating to color, or to colors.
Proceeding by the smaller intervals (half steps or semitones) of the scale, instead of the regular intervals of the diatonic scale.
Source: Webster's dictionarya chromatic scale Source: Internet
chromatic lens Source: Internet
12-tone chromatic scale The following chart lists the names used in different countries for the 12 notes of a chromatic scale built on C. The corresponding symbols are shown within parenthesis. Source: Internet
Aberrations fall into two classes: monochromatic and chromatic. Source: Internet
A clarinet must have holes and keys for nineteen notes (a chromatic octave and a half, from bottom E to B ) in its lowest register to play the chromatic scale. Source: Internet
Again, this implies that the notes are drawn from a chromatic scale tuned with 12-tone equal temperament. Source: Internet