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.
one of many ideas of the physiological premise of color vision based upon proof from experiments on color mixture wherein all colors and shades were capable of being matched by a mixture of three primary hues. The Young-Helmholtz theory of color vision is the most widely acknowledged trichromatic theory.