[ˈkrɪstl], (Noun)

Definitions:
- a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces
(e.g: a quartz crystal)

- highly transparent glass with a high refractive index
(e.g: a crystal chandelier)



Phrases:
- crystal clear

Origin:
late Old English cristalla, cristallum (denoting ice or a mineral resembling it), from Latin crystallum, from Greek krustallos ‘ice, crystal’; subsequently reinforced by Old French cristal. The chemistry sense dates from the early 17th century

[ˈkrɪstl], (Adjective)

Definitions:
- clear and transparent like crystal
(e.g: the clean crystal waters of the lake)


Phrases:
- crystal clear

Origin:
late Old English cristalla, cristallum (denoting ice or a mineral resembling it), from Latin crystallum, from Greek krustallos ‘ice, crystal’; subsequently reinforced by Old French cristal. The chemistry sense dates from the early 17th century