(uncountable, idiomatic, slang) Erectile dysfunction caused by methamphetamine use or other drug use.

(now historical) Crystal; a piece of crystal.

plural of crystalline

(pathology, especially in plural) Elongated, double-pyramidal crystal of eosinophils found in the sputum in bronchial asthma

(crystallography) Any of the seven distinct symmetry classifications of crystals: cubic, tetragonal, hexagonal, orthorhombic, monoclinic, triclinic and trigonal.

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

(chemistry, physics) A description of various properties of transition element complex compounds that compares the effects of its ligands to that of neighbouring atoms in a crystal

A periodic optical nanostructure that affects the motion of photons in much the same way that ionic lattices affect electrons in solids.

Glass that contains at least 24% lead oxide (PbO). / Cut glass made of this material.

Alternative form of anticrystal