monochromat

noun

mono·​chro·​mat ˈmä-nə-krō-ˌmat  ˌmä-nə-ˈkrō 

: a completely color-blind individual

Word History

Etymology

mon- + Greek chrōmat-, chrōma

First Known Use

1893, in the meaning defined above

Medical Definition

monochromat

noun

mono·​chro·​mat ˈmän-ə-krō-ˌmat  ˌmän-ə-ˈ 

1

: an individual who is completely color-blind

2

: an optical part (as a microscope objective) that is used only in a limited range of wavelengths