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An East Indian weight, varying in different localities from 25 to about 82 pounds avoirdupois.

in barometers, thermometers, ect. Specific gravity 13.6. Symbol Hg (Hydrargyrum). Atomic weight 199.8. Mercury has a molecule which consists of only one atom. It was named by the alchemists after the god Mercury, and designated by his symbol, mercury.

Having the same elements united in the same proportion by weight, and with the same molecular weight, but possessing a different structure and different properties; as, methyl ether and ethyl alcohol are metameric compounds. See Isomeric.

ogical register, a table or register exhibiting the state of the air and its temperature, weight, dryness, moisture, motion, etc.

th, equal to 39.37 English inches, the standard of linear measure in the metric system of weights and measures. It was intended to be, and is very nearly, the ten millionth part of the distance from the equator to the north pole, as ascertained by actual measurement of an arc of a meridian. See Metric system, under Met…

analysis (Chem.), analysis by volume; volumetric analysis. -- Metric system, a system of weights and measures originating in France, the use of which is required by law in many countries, and permitted in many others, including the United States and England. The principal unit is the meter (see Meter). From this are f…

A weight of 1,000 kilograms, or 2,204.6 pounds avoirdupois.

The science of, or a system of, weights and measures; also, a treatise on the subject.

An instrument consisting of a short pendulum with a sliding weight. It is set in motion by clockwork, and serves to measure time in music.

The weight of the half hydrogen molecule, or of the hydrogen atom, taken as the standard in comparing the atomic weights of the elements; thus, an atom of oxygen weighs sixteen microcriths. See Crith. J. P. Cooke.

ds or tubes of colored glass fused together and embedded in clear glass; -- used for paperweights and other small articles.

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.

An ancient weight or denomination of money, of varying value. The Attic mina was valued at a hundred drachmas.

A small weight; one twentieth of a grain.

An Abyssinian weight, equivalent to a Troy grain. Mocha stone (Min.), moss agate.

ion, or strain. (b) An expression of the force (usually in terms of the height in feet or weight in pounds of a column of the same body) which would be necessary to elongate a prismatic body of a transverse section equal to a given unit, as a square inch or foot, to double, or to compress it to half, its original lengt…

action acting between the molecules of bodies, and at insensible distances. -- Molecular weight (Chem.), the weight of a molecule of any gas or vapor as compared with the hydrogen atom as a standard; the sum of the atomic weights of the constituents of a molecule; thus, the molecular weight of water (H2O) is 18.…

hen reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic weight 95.9.

Importance, as in influence or effect; consequence; weight or value; consideration. Matters of great moment. Shak. It is an abstruse speculation, but also of far less moment and consequence of us than the others. Bentley.