Definition
A crystallite is a small crystal, often one of many that make up a larger crystalline solid. Think of it as a tiny building block 🧱 in a much larger structure. Unlike a fully formed crystal, a crystallite is usually microscopic. It's a single grain within a polycrystalline material. For example, many metals are composed of countless crystallites bonded together. Crystallites are like individual pieces of a puzzle that come together to form a complete picture. So, a crystallite is a small crystal within a larger solid.