527 Group â A tax-exempt group organized under section 527 of the Internal Revenue Code to raise money for political activities. These groups are typically parties, candidates, committees or associations organized for the purpose of influencing an issue, policy, appointment or election, be it federal, state or local.
Noun. 1. trichromacy-the normal ability to see colors. chromatic vision, color vision. visual modality, visual sense, vision, sight-the ability to see; the visual faculty.
Top, Anatomy of the eye. Vision is the reception of images by the eye as a result of the passage of light into the eye. Light is focused by the lens on the retina, where it is converted into nerve impulses that are transmitted to the centers in the brain where images are interpreted. achromatic vision monochromatic vision. anomalous trichromatic vision color vision deficiency in which a person has all three cone pigments but one is deficient or anomalous; it may be either inherited as an X-linked recessive trait or acquired as a result of a retinal, cerebral, systemic, or toxic disorder.