D defs.my
Entry 2 senses Webster, 1913

Crystallography

/(krĭs"tal*lŏg"rȧ*fy̆)/ · Crys·tal·log·ra·phy · IPA /ˌkɹɪstəˈlɑɡɹəfi/
01 n. The doctrine or science of crystallization, teaching the system of forms among crystals, their structure, and their methods of formation.
  1. 1.
    The doctrine or science of crystallization, teaching the system of forms among crystals, their structure, and their methods of formation.
  2. 2.
    A discourse or treatise on crystallization.