Polyhalite

Pol`y*ha"lite

(?), n. [Poly- + Gr. salt.] (Min.) A mineral usually occurring in fibrous masses, of a brick-red color, being tinged with iron, and consisting chiefly of the sulphates of lime, magnesia, and soda.
[1913 Webster]

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Pol`y*he"dral

(?),

Pol`y*hed"ric*al

(?), } a. [See Polyhedron.] (Geom.) Having many sides, as a solid body.
[1913 Webster]

Polyhedral angle, an angle bounded by three or more plane angles having a common vertex.
[1913 Webster]

 

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Fri 14th December 2018