opaque

Meanings

1. 1
   adj

   Neither reflecting nor emitting light.

   We have agreed that heat is energy to begin with. Light is also a form of energy for when absorbed by any opaque substance it turns completely into heat.

2. 2
   noun

   An area of darkness; a place or region with no light.

   Through this opaque of Nature and of Soul, / This double night, transmit one pitying ray, / To lighten, and to cheer.

3. 3
   noun

   Something which is opaque rather than translucent.

   They can be obtained in various thicknesses and in many colors, including beautiful imitations of pearl, mother-of-pearl, veins and mottles, stratifications, roll stratifications, imitation corals, and all colors of translucents, transparents and opaques, grained ivory, shell (plain and corrugated mottle), onyx, wood effects, plaids, checks, stripes, metallic, bronze pearl plain, bronze pearl with fancy blocks, bronze pearl in veins and stripes, and what is called “essence pearl.”

4. 4
   adj

   not transmitting or reflecting light or radiant energy

5. 5
   adj

   not clearly understood or expressed

6. 6
   adj

   Allowing little light to pass through, not translucent or transparent.

7. 7
   adj

   Unclear, unintelligible, hard to get or explain the meaning of.

8. 8
   adj

   Obtuse, stupid.

Etymology

From Middle English opake, from Latin opacus (“shaded, shady, dark”) (of unknown origin), later reinforced from Middle French opaque. Doublet of ubac.