Bĕr'yl-loid, n.
n. [Gr. βήρυλλος, beryl, and εἶδος, appearance.] (Crystallog.) A solid consisting of two twelve-sided pyramids put base to base, as in the beryl. Dana.
n. [Gr. βήρυλλος, beryl, and εἶδος, appearance.] (Crystallog.) A solid consisting of two twelve-sided pyramids put base to base, as in the beryl. Dana.