Definition of "crystallographical" []

• Crystallographic (adjective)

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• "From crystallographical data it is always known how the face of a cube is situated in any given regular crystal, and there is consequently no difficulty in fixing the crystal on the spectrometer table in such a way that the reflection shall take place by planes with any prescribed orientation."
• "The relation between sterols and oestrogenic substances which had been assumed on crystallographical grounds became probable from the chemical point of view only after Butenandt and"
• "His reports about different crystallographical instruments, as well as those regarding the production of thin sections of crystals for microscopic study, are important for the science of crystallography."