Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

achromatic

play
adjective ach·ro·mat·ic \ˌa-krə-ˈma-tik, (ˌ)ā-\

Definition of achromatic

  1. 1 :  refracting light without dispersing it into its constituent colors :  giving images practically free from extraneous colors <an achromatic telescope>

  2. 2 :  not readily colored by the usual staining agents

  3. 3 :  possessing no hue :  being or involving black, gray, or white :  neutral <achromatic visual sensations>

  4. 4 :  being without accidentals or modulation :  diatonic

ach·ro·mat·i·cal·lyplay \-ti-k(ə-)lē\ adverb
achro·ma·tismplay \(ˌ)ā-ˈkrō-mə-ˌti-zəm, a-\ noun
achro·ma·tizeplay \(ˌ)ā-ˈkrō-mə-ˌtīz, a-\ transitive verb



Medical Dictionary

achromatic

play
adjective ach·ro·mat·ic \ˌak-rə-ˈmat-ik\

Medical Definition of achromatic

  1. 1:  refracting light without dispersing it into its constituent colors :  giving images practically free from extraneous colors <an achromatic telescope>

  2. 2:  not readily colored by the usual staining agents

  3. 3:  possessing or involving no hue :  being or involving only black, gray, or white <achromatic visual sensations> <achromatic light stimuli>

  4. ach·ro·mat·i·cal·ly \-i-k(ə-)lē\play adverb




Learn More about achromatic


Seen and Heard

What made you want to look up achromatic? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 14, 2016

to hug and kiss another person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

100 pounds 16.96 pounds 196.5 pounds 2.2 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ