adj.
Pronunciation: ˌ a-kr ə - ' ma-tik, ( ˌ ) ā -
Function: adjective
Date: 1766
1 : refracting light without dispersing it into its constituent colors : giving images practically free from extraneous colors <an achromatic telescope>
2 : not readily colored by the usual staining agents
3 : possessing no hue : being or involving black, gray, or white : NEUTRAL < achromatic visual sensations>
4 : being without accidentals or modulation : DIATONIC
– ach · ro · mat · i · cal · ly \ -ti-k( ə -)l ē \ adverb
– achro · ma · tism \ ( ˌ ) ā - ' kr ō -m ə - ˌ ti-z ə m, a- \ noun
– achro · ma · tize \ ( ˌ ) ā - ' kr ō -m ə - ˌ t ī z, a- \ transitive verb