Compound crystal

(Crystallog.) a twin crystal, or one seeming to be made up of two or more crystals combined according to regular laws of composition.
See under Compound.

See also: Compound, Crystal

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Summary: TEHRAN (FNA)- Researchers announced that they have created a new compound crystal material that promises to help produce advances in a range of scientific and technological pursuits.
The bottoms of these compound crystals are broken but rehealed, and one even has a milky quartz crystal attached perpendicularly.