achromatic


ach·ro·mat·ic

adjective \ˌa-krə-ˈma-tik, (ˌ)ā-\

Definition of ACHROMATIC

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-)lē\ adverb
achro·ma·tism \(ˌ)ā-ˈkrō-mə-ˌti-zəm, a-\ noun
achro·ma·tize \(ˌ)ā-ˈkrō-mə-ˌtīz, a-\ transitive verb

First Known Use of ACHROMATIC

1754

ach·ro·mat·ic

adjective \ˌak-rə-ˈmat-ik\   (Medical Dictionary)

Medical Definition of ACHROMATIC

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 or involving no hue : being or involving only black, gray, or white <achromatic visual sensations> <achromatic light stimuli>
ach·ro·mat·i·cal·ly \-i-k(ə-)lē\ adverb

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