The act or process by which a substance in solidifying assumes the form and structure of a crystal, or becomes crystallized. / The body formed by crystallizing.

Encrypted text. / (games) A type of word puzzle in which text encoded by a simple cipher is to be decoded.

(now rare) A cave or cavern. / An underground vault, especially one beneath a church that is used as a burial place. / (anatomy) A small pit or cavity in the surface of an organ or other structure.

(electronics) An early radio receiver, having no electrical power supply except the radio waves themselves; it used a crystal of lead or cadmium sulphide and a wire (the cat's whisker) touching the crystal's surface.

(analytical chemistry) A technique in which the patterns formed by the diffraction of X-rays on passing through a crystalline substance yield information on the lattice structure of the crystal, and the molecular structure of the substance.

The experimental science of determining the arrangement of atoms in solids. / The study of crystals.

Of, relating to, or composed of crystals. / (chemistry) Having a regular three-dimensional molecular structure. / Resembling crystal in being clear and transparent. / Pure.

(obsolete) Any crystalline substance. / (obsolete) aniline

The science and technology of the production of very low temperatures. / The scientific study of low-temperature phenomena.

(chemistry) The water present in the crystals of the salts of certain metals; it is weakly bound by electrostatic forces and may normally be removed by heating.