1) Color blindness 2) Color vision deficiency 3) Colour blindness 4) Colour vision deficiency 5) Complete color blindness 6) Monochromacy 7) Monochromasy 8) Monochromia 1) Monochromacy 2) Monochromasy 3) Monochromia 
1. The state of having or exhibiting only one colour. ... Synonym: achromatopsia. ... Origin: mono-+ G. Chroma, colour ... (05 Mar 2000) ... 
(mon″o-kro´mә-tiz″әm) monochromatic vision. cone monochromatism that in which there is some cone function. rod monochromatism that in which there is complete absence of cone function.
Type: Term Pronunciation: mon-ō-krō′mă-tizm Definitions: 1. The state of having or exhibiting only one color. Synonyms: achromatopsia
Monochromatism: 1) Total inability to perceive color. A person with true monochromatism perceives only black, white, and shades of gray. It is due to lack of or damage to the cones of the eye that perceive color, or to inability of the nerves to translate information received from the cones. Complete monochromatism is usually an inherited condition...
a monochromatic quality: the monochromatism of Southern Sung art. · a defect of vision in which the retina fails to perceive color. Cf.(def. 2),(def. 3).