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.
Color vision. 1  Colorless, green, and red photographic filters as imaged (perceived) by camera. 2  The modern model of human color perception as it occurs in the retina, pertaining to both the trichromatic and opponent process theories introduced in the 19th century.