the condition or quality of being achromatic; lack of color
: also aˌchromaˈticity (eɪˈkroʊməˈtɪsəti)
achromatism in American English
(eiˈkrouməˌtɪzəm)
noun Optics
1.
freedom from color
2.
freedom from chromatic aberration, as in an achromatic lens
Also: achromaticity
Word origin
[1790–1800; achromat(ic) + -ism]This word is first recorded in the period 1790–1800. Other words that entered Englishat around the same time include: cutout, ideology, methodology, rationalism, standby-ism is a suffix appearing in loanwords from Greek, where it was used to form action nounsfrom verbs (baptism). On this model, -ism is used as a productive suffix in the formation of nouns denoting action or practice,state or condition, principles, doctrines, a usage or characteristic, devotion oradherence, etc. (criticism; barbarism; Darwinism; despotism; plagiarism; realism; witticism; intellectualism)