A dye, derived from gentian violet, that is used as an acid-base indicator and as a biological stain.

Synonym of crystal set

(colloquial) The drug methamphetamine hydrochloride.

(chemistry, physics) A phase of matter similar to a liquid, in which the molecules are arranged regularly in one or two dimensions. / Material in that phase.

A material formed from by the growth of a crystal nucleus without secondary nucleation or impingement on other crystals; a regular three-dimensional structure extends throughout the material

(crystallography) A regular three-dimensional geometric arrangement of atoms, molecules or ions in a crystal

Alternative form of crystal meth

A small crystal from which a larger crystal of the same substance is grown

An area mainly in the borough of Bromley, south-east Greater London, England, named after the "palace" that was erected there for The Great Exhibition of 1851 (OS grid ref TQ3471).

(pseudoscience) The supposed therapeutic effects of crystals.