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rement; as, the inch, foot, yard, etc., are metrical terms; esp., of or pertaining to the metric system.

A weight of the metric system, being one million grams; a metric ton.

A measure of weight, in the metric system, being the thousandth part of a gram, equal to the weight of a cubic millimeter of water, or .01543 of a grain avoirdupois.

A measure of capacity in the metric system, containing the thousandth part of a liter. It is a cubic centimeter, and is equal to .061 of an English cubic inch, or to .0338 of an American fluid ounce.

A lineal measure in the metric system, containing the thousandth part of a meter; equal to .03937 of an inch. See 3d Meter.

A prefix, esp. in the metric system, indicating ten thousand, ten thousand times; as, myriameter.

A measure of surface in the metric system containing ten thousand ares, or one million square meters. It is equal to about 247.1 acres.

neral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide. Hence sable coal his massy couch extends, And stars of gold the sparkling pyrite blends. E. Darwin.

mages. The power of double refraction is possessed by all crystals except those of the isometric system. A uniaxial crystal is said to be optically positive (like quartz), or optically negative (like calcite), or to have positive, or negative, double refraction, according as the optic axis is the axis of least or great…

A unit of cubic measure in the metric system, being a cubic meter, or kiloliter, and equal to 35.3 cubic feet, or nearly 1

A solid in the isometric system, bounded by twenty-four equal triangular faces, four corresponding to each face of the cube.

A solid of the isometric system bounded by twenty-four equal faces, three corresponding to each face of an octahedron. Tetragonal trisoctahedron, a trisoctahedron each face of which is a quadrilateral; called also trapezohedron and icositetrahedron. -- Trigonal trisoctahedron, a trisoctahedron each face of which is an…

pecially, a liquid measure in Belgium and Holland, corresponding to the hectoliter of the metric system, which contains 22.01 imperial gallons, or 26.4 standard gallons in the United States.