achromatic

[ ak-ruh-mat-ik, ey-kruh- ]

/ ˌæk rəˈmæt ɪk, ˌeɪ krə- /

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See synonyms for achromatic on Thesaurus.com

adjective

Optics.

free from color.
able to emit, transmit, or receive light without separating it into colors.

Biology. (of a cell structure) difficult to stain.

Music. without accidentals or changes in key.

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Origin of achromatic

First recorded in 1760–70; a-⁶ + chromatic

OTHER WORDS FROM achromatic

ach·ro·mat·i·cal·ly, adverb

Words nearby achromatic

achondroplasia, Christmas Carol, A, achroite, achromat, achromate, achromatic, achromatic colour, achromaticity, achromatic lens, achromatic prism, achromatin

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use achromatic in a sentence

The construction of achromatic telescopes depends upon this principle.
Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry|Joseph Priestley
The achromatic lens consists of a double convex lens of crown glass combined with a plano-concave lens of flint glass.
Physics|Willis Eugene Tower
Achromatic lenses are used in all high-grade optical instruments such as telescopes and microscopes.
Physics|Willis Eugene Tower
The colored images that are sometimes seen in cheap opera glasses show the result of not using achromatic lenses.
Physics|Willis Eugene Tower

The camera is furnished with either meniscus achromatic or rapid rectilinear lens.
Kodaks and Kodak Supplies, 1914|Canadian Kodak Company

British Dictionary definitions for achromatic

achromatic

/ (ˌækrəˈmætɪk) /

adjective

without colour

capable of reflecting or refracting light without chromatic aberration

cytology

not staining with standard dyes
of or relating to achromatin

music

involving no sharps or flats
another word for diatonic

denoting a person who is an achromat

Derived forms of achromatic

achromatically, adverbachromatism (əˈkrəʊməˌtɪzəm) or achromaticity (əˌkrəʊməˈtɪsɪtɪ), noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012