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American Dictionary of the English Language

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Arthrodia


ARTHRO'DIA, noun [Gr. from to frame or articulate.]

1. A species of articulation, in which the head of one bone is received into the shallow socket of another; as the humerus and the scapula.

2. In natural history, a genus of imperfect crystals, found in complex masses, and forming long single pyramids, with very short and slender columns.