Definition of achromatous in English:

achromatous

adjective

Medicine
rare
  • Colourless, lacking coloration.

Origin

Mid 19th century; earliest use found in Encyclopaedia Metropolitana. From ancient Greek ἀχρώματος + -ous.

Pronunciation:

achromatous

/eɪˈkrəʊmətəs//aˈkrəʊmətəs/