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.
Monochromatic and polychromatic light. Perception of color. Complementary colors. Mixing of pigments. Chromatic aberration. The solar spectrum. A great historic advance in the understanding of the nature of light came through a series of experiments performed by Sir Isaac Newton from 1666 to1672.