Crystalline /(kr?s"tal-l?n [or] -l?n; 277)/

Crys·tal·line

Crystalline

a.
  1. Consisting, or made, of crystal.
    Mount, eagle, to my palace crystalline.
  2. Formed by crystallization; like crystal in texture.
    Their crystalline structure.
  3. Imperfectly crystallized; as, granite is only crystalline, while quartz crystal is perfectly crystallized.
  4. Fig.: Resembling crystal; pure; transparent; pellucid.

Phrases & Compounds
Crystalline heavens
in the Ptolemaic system of astronomy, two transparent spheres imagined to exist between the region of the fixed stars and the primum mobile (or outer circle of the heavens, which by its motion was supposed to carry round all those within it), in order to explain certain movements of the heavenly bodies.
Crystalline lens
the capsular lenslike body in the eye, serving to focus the rays of light. It consists of rodlike cells derived from the external embryonic epithelium.

Crystalline

n.
  1. A crystalline substance.
  2. See Aniline. [Obs.]