opacous

1. (obsolete, chiefly poetic) Not shining or illuminated; dark.Examples: "The firm opacous Globe / Of this round World, whose first convex divides / The luminous inferior Orbs."not-comparableobsoletepoetic

2. (obsolete) Not allowing the passage of light; opaque.Examples: "And vve particularly remember, that, being at ſome diſtance from London one Night, that the People, upon a very vvell-come Occaſion, teſtified their Joy by numerous Bon-fires; though, by reaſon of the Interpoſition of the Houſes, vve could not ſee the Fires themſelves, yet vve could plainly ſee the Air all enlighten'd over and near the City; vvhich argu'd, that the lucid Beams ſhot upvvards from the Fires, met in the Air with the Corpuſcles opacous enough to reflect them to our Eyes."; "[I]f you take ammel that is almost opacous, and grind it very well on a Porphyry, or Serpentine, the small particles will by reason of their flaws, appear perfectly opacous […]"; "The upper wings are opacous; at their hinder ends, where they lap over, transparent, like the wing of a fly."not-comparableobsolete