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

Rhymes with ACHROMATIC

acrobatic, aerobatic, anabatic, antistatic, aromatic, Asiatic, astigmatic, autocratic, automatic, bureaucratic, charismatic, cinematic, democratic, diplomatic, Eleatic, emblematic, enzymatic, Hanseatic, hieratic, Hippocratic, hydrostatic, kerygmatic, kleptocratic, melismatic, mobocratic, monocratic, morganatic, numismatic, operatic, phallocratic, photostatic, plutocratic, pre-Socratic, problematic, programmatic, symptomatic, systematic, technocratic, theocratic, thermostatic, undogmatic, undramatic

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\ (audio pronunciation) adverb