a solid body in which the atoms or molecules are arranged in a regular repeating pattern

to form crystals again from a solution or melt, or to change the crystal structure of a solid

Water molecules that are incorporated into the structure of a crystal; also known as water of crystallization.

the scientific study of crystals and their structure

rock composed entirely of minerals in a crystalline state, such as igneous and metamorphic rocks

crystalline; in the form of crystals

lead glass or crystal used for decorative glassware