Final answer:
A crystalline solid is a naturally occurring, inorganic solid with a specific composition and an orderly arrangement of fundamental components called a crystal structure.
Step-by-step explanation:
A crystalline solid is a naturally occurring, inorganic solid with a specific composition and an orderly arrangement of fundamental components called a crystal structure. This means that the particles in a crystalline solid are arranged in a regular, three-dimensional pattern. One example of a crystalline solid is salt (NaCl), which has a regular arrangement of sodium and chloride ions.