A silicate of aluminium which crystallizes in the triclinic system. It usually occurs as long bladed crystals, blue in colour, in metamorphic rocks. Also cyanite. See disthene
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A method of recording in a single radiograph the excursions of moving organs in the body, by use of a kymograph, which records physiological mus
A deformity of the spine in which dorsal convexity is increased, the spine being also bent laterally.