Search the Dictionary

h investigates the relations, properties, and measurement of solids, surfaces, lines, and angles; the science which treats of the properties and relations of magnitudes; the science of the relations of space.

e the ring itself is so pivoted to its support that it can turn about a diameter at right angles to the first. Gimbal joint (Mach.), a universal joint embodying the principle of the gimbal. -- Gimbal ring, a single gimbal, as that by which the cockeye of the upper millstone is supported on the spindle.…

ely in opposite directions so as to divide the space between the bars into a series of triangles. Knight. -- Sandwich girder, a girder consisting of two parallel wooden beams, between which is an iron plate, the whole clamped together by iron bolts.

Of or pertaining to the angles of the mouth; as, a gonidial groove of an actinian.

A special groove or furrow at one or both angles of the mouth of many Anthozoa.

An instrument for measuring angles, especially the angles of crystals, or the inclination of planes. Contact, or Hand, goniometer, a goniometer having two movable arms (ab, cd), between which (at ab) the faces of the crystals are placed. These arms turn about a fixed point, which is the center of the graduated circle o…

The art of measuring angles; trigonometry.

A projecting turret for a sentry, as at the salient angles of works, or the acute angles of bastions.

A subordinary of triangular form having one of its angles at the fess point and the opposite aide at the edge of the escutcheon. When there is only one gyron on the shield it is bounded by two linea drawn from the fess point, one horizontally to the dexter side, and one to the dexter chief corner.

An instrument for measuring the forms and angles of salts and crystals; a goniometer.

A stone with spangles of gold color in it.

Shaped like the head of a halberd; triangular, with the basal angles or lobes spreading; as, a hastate leaf.

ing, and miniature painting, in which shading is produced by lines crossing each other at angles more or less acute; -- called also crosshatching.

. 3 (a). -- Heading joint. (a) (Carp.) A joint, as of two or more boards, etc., at right angles to the grain of the wood. (b) (Masonry) A joint between two roussoirs in the same course.

ch full symmetry would require, as when a cube has planes only on half of its eight solid angles, or one plane out of a pair on each of its edges; or as in the case of a tetrahedron, which is hemihedral to an octahedron, it being contained under four of the planes of an octahedron. -- Hem`i*he"dral*ly, adv.…

A plane figure of eleven sides and eleven angles. [Written also endecagon.]

A plane figure consisting of seven sides and having seven angles.

Having seven angles or sides. Heptagonal numbers (Arith.), the numbers of the series 1, 7, 18, 34, 55, etc., being figurate numbers formed by adding successively the terms of the arithmetical series 1, 6, 11, 16, 21, etc.

Having seven angles.

A plane figure of six angles. Regular hexagon, a hexagon in which the angles are all equal, and the sides are also all equal.