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The part of a solid next the base, formed by cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other.

to the side parallel to the base; as, the altitude of a triangle, pyramid, parallelogram, frustum, etc.

One of a series of ornaments, in the form of a frustum of a cone, attached to the lower part of the triglyphs, and also to the lower faces of the mutules, in the Doric order; -- called also campana, and drop. Gutta serena Etym: [L., lit. serene or clear drop] (Med.), amaurosis. -- Guttæ band (Arch.), the listel or ban…