1. A homogenous solid formed by a repeating, three-dimensional pattern of atoms, ions, or molecules and having fixed distances between constituent parts.
2. A mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces.

A method of growing large size, high quality semiconductor crystal by slowly lifting a seed crystal from a molten bath of the material under careful cooling conditions.

The most widely used technique for making single-crystal silicon, in which a seed of single-crystal silicon contacts the top of molten silicon.

As the seed is slowly raised, atoms of the molten silicon solidify in the pattern of the seed and extend the single-crystal structure.

One of several types of ice crystals found in snow.

A snow crystal is an individual ice crystal whereas a snowflake is usually an aggregate of many single crystals.