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A solid figure or body inclosed by ten plane surfaces. [Written also, less correctly, decaedron.]

A solid having twelve faces.

See Dodecahedral, and Dodecahedron.

decahedral, or Rhombohedral, cleavage, cleavage parallel to the faces of an octahedron, dodecahedron, or rhombohedron. -- Prismatic cleavage, cleavage parallel to a vertical prism.

color is red, the luster is vitreous, and the hardness greater than that of quartz. The dodecahedron and trapezohedron are the common forms.

Having five corners or angles. Pentagonal dodecahedron. See Dodecahedron, and Pyritohedron.

ve regular geometrical solids; namely, the tetrahedron, hexahedron or cube, octahedron, dodecahedron, and icosahedron. -- Platonic love, a pure, spiritual affection, subsisting between persons of opposite sex, unmixed with carnal desires, and regarding the mind only and its excellences; -- a species of love for which…

The pentagonal dodecahedron, a common form of pyrite.

e regular polyhedrons, -- the tetrahedron, the hexahedron, or cube, the octahedron, the dodecahedron, and the icosahedron. -- Regular sales (Stock Exchange), sales of stock deliverable on the day after the transaction. -- Regular troops, troops of a standing or permanent army; -- opposed to militia.…

A mineral of a white to blue or gray color, occuring commonly in dodecahedrons, also massive. It is a silicate of alumina and soda with some chlorine.