crystallography

the term crystallography is a modern scientific compound, directly assembled from classical elements. the first part, 'crystal', originates from the greek 'krystallos', meaning ice or clear quartz, which passed into latin as 'crystallum'. this reflects the ancient observation that clear minerals resembled frozen water. the second part, '-graphy', derives from the greek verb 'graphein', to write, and its suffix '-graphia', denoting a descriptive science or field of study. thus, the word's literal construction means "the descriptive science of crystals," which perfectly captures its modern definition as the branch of science concerned with the structure and properties of crystals.

Structure: crystal + graphy crystal (from latin 'crystallum', meaning ice, crystal; the solid form of a substance with a regular geometric shape) + graphy (from greek '-graphia', meaning writing, description, or science of)