crystal

crys-tal · noun

imported

Definitions

noun

  1. 1.

    A solid whose atoms are arranged in a highly ordered, repeating pattern.

  2. 2.

    Made of or resembling crystal; very clear.

  3. 3.

    High-quality clear glass used for fine glassware.

  4. 4.

    A transparent mineral, especially quartz.

  5. 5.

    The transparent cover of a watch face.

Forms

plural: crystals

Phrases & expressions

  • •
    crystal clear — absolutely clear or obvious
  • •
    crystal ball — a sphere used for fortune-telling; predicting the future
  • •
    crystal meth — slang for methamphetamine (illicit drug)

Related words

See also: gem, glass, quartz
Synonyms: gem, glass, quartz

Etymology

From Greek krustallos meaning "ice, rock crystal," from kruos meaning "frost." The Greeks believed quartz was ice frozen permanently hard.