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achromatic Definition

achro·matic (ak′rə mat′ik, ā′krə-)

adjective

  1. colorless
  2. refracting white light without breaking it up into its component colors
  3. forming visual images whose outline is free from prismatic colors an achromatic lens
  4. Biol.
    1. staining poorly with the usual stains
    2. made of achromatin
  5. Music without accidentals; diatonic an achromatic scale

Etymology: Gr achrōmatos < a-, without + chrōma, color (see chrome) + -ic

Related Forms:

achromatic Usage Examples

Modifies a noun

  • refractor: There is a little bit of color shift but the filter looks like a good addition to an achromatic refractor.
  • lens: With achromatic parfocal lenses, the Swift is of quality comparable to the better student microscopes.
  • telescope: An achromatic telescope of Bradley, one of the earliest examples, is here.
  • objective: Some of the finest photographs I've ever seen of diatoms were taken with achromatic objectives with a plate camera in 1904.
  • combination: E. Microscopy using achromatic combinations of lenses with matched focal lengths.
  • condenser: Achromatic condensers are better, but not so commonly supplied with microscopes owing to their intrinsically higher costs.

Noun used with modifier

  • power: But it was difficult to make small high power achromatic lenses.