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1Relating to, using, or denoting lenses that transmit light without separating it into constituent colours.‘achromatic microscopes’‘a lens of achromatic construction’
- ‘The modern achromatic compound microscope was invented in 1878, and it was this instrument that added the extra dimension of the microscopic study of tissues to anatomical teaching.’
- ‘The invention is applicable, in particular, to the production of a main beam with a blurred, achromatic, cut-off at the bottom; this beam may be autonomous, or it may be complementary to a dipped or passing beam.’
- ‘This behavior is also common in two-material waveplates such as achromatic waveplates constructed from quartz and magnesium fluoride plates.’
- ‘The system had to be achromatic and diffraction limited for two specific wavelengths spaced about 35 nm apart.’
- ‘The 'Barlow lens', a modification of this telescope lens, is a negative achromatic combination of flint glass and crown glass.’
- ‘He also experimented with making an achromatic telescope.’
2literary Without colour.‘the achromatic gloom’
pale, pastel, light-tonedView synonyms
- ‘Hints of desaturated color threaten the pure achromatic palette.’
- ‘This stark and achromatic poem is a world away from the graceful and well-tuned lyrics with which Campbell began his career.’
- ‘The ocean, also rather achromatic, kissed the foundation of the towering building, spraying up to the pediment.’
- ‘Random branches hung aimlessly above her head and the neighbors' rose bushes stretched thinly across their metal fence like an achromatic spider web.’
- ‘Lincoln checked her watch and nodded as an emaciated gray bus spluttered dead; pausing on its way to the ring of featureless, achromatic roads which led to the main structure of South Street ferry port.’
Late 18th century: via French from Greek a- without + khrōmatikos (from khrōma colour).
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