achromatic adjective & noun. [akrǝʊ'matɪk] L18.
[French achromatique, formed as A-¹⁰, CHROMATIC.]
A. adjective. Free from colour; transmitting light without decomposing it into its constituent colours. L18.
b. noun. An achromatic lens. L18.

■ 'achromat noun [-AT²] an achromatic lens E20.

■ achromatically adverb M19.

■ ,achroma'ticity noun M19.

■ a'chromatism noun the quality of being achromatic L18.

■ a'chromatize verb trans. make achromatic M19.

[TahlilGaran] English Dictionary ▲