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Macroprism :: Macroprism (n.) A prism of an orthorhombic crystal between the macropinacoid and the unit prism; the corresponding pyramids are called macropyramids.

Pyramidion :: Pyramidion (n.) The small pyramid which crowns or completes an obelisk.

Pyramid :: Pyramid (n.) A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.

Right :: Right (a.) Upright; erect from a base; having an upright axis; not oblique; as, right ascension; a right pyramid or cone..

Cuniform :: Cuniform (n.) One of the carpal bones usually articulating with the ulna; -- called also pyramidal and ulnare.

Trou-de-loup :: Trou-de-loup (n.) A pit in the form of an inverted cone or pyramid, constructed as an obstacle to the approach of an enemy, and having a pointed stake in the middle. The pits are called also trapholes..

Subtriple :: Subtrihedral (a.) Approaching the form of a three-sided pyramid; as, the subtrihedral crown of a tooth..

Pyramidal :: Pyramidal (a.) Of or pertaining to a pyramid; in the form of a a pyramid; pyramidical; as, pyramidal cleavage..

Pyramoid :: Pyramoid (n.) See Pyramidoid.

Rosehead :: Rosehead (n.) A many-sided pyramidal head upon a nail; also a nail with such a head.

Scalenohedron :: Scalenohedron (n.) A pyramidal form under the rhombohedral system, inclosed by twelve faces, each a scalene triangle..

Pylon :: Pylon (n.) A low tower, having a truncated pyramidal form, and flanking an ancient Egyptian gateway..

Quartzoid :: Quartzoid (n.) A form of crystal common with quartz, consisting of two six-sided pyramids, base to base..

Dihexagonal :: Dihexagonal (a.) Consisting of two hexagonal parts united; thus, a dihexagonal pyramid is composed of two hexagonal pyramids placed base to base..

Panicle :: Panicle (n.) A pyramidal form of inflorescence, in which the cluster is loosely branched below and gradually simpler toward the end..

Altitude :: Altitude (n.) The perpendicular distance from the base of a figure to the summit, or to the side parallel to the base; as, the altitude of a triangle, pyramid, parallelogram, frustum, etc..

Pyramides :: Pyramides (pl. ) of Pyrami.

Pyramidally :: Pyramidally (adv.) Like a pyramid.

Taper :: Taper (a.) Regularly narrowed toward the point; becoming small toward one end; conical; pyramidical; as, taper fingers..

Pyramid :: Pyramid (n.) The game of pool in which the balls are placed in the form of a triangle at spot.

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