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An instrument for measuring the specific gravity and ascertaining the quantity of sugar contained in must.

the least angle, at which a gliding machine or aëroplane will glide to earth by virtue of gravity without applied power.

A rare metallic element, of a silver white color, and low specific gravity (2.1), resembling magnesium. It never occurs naturally in the free state, but is always combined, usually with silica or alumina, or both; as in the minerals phenacite, chrysoberyl, beryl or emerald, euclase, and danalite. It was named from its…

. It has a characteristic yellow color, is one of the heaviest substances known (specific gravity 19.32), is soft, and very malleable and ductile. It is quite unalterable by heat, moisture, and most corrosive agents, and therefore well suited for its use in coin and jewelry. Symbol Au (Aurum). Atomic weight 196.7.…

(Physics) An instrument for ascertaining the specific gravity of bodies.

Of or pertaining to the force of gravity; as, gravitational units.

s, grisly locks; a grisly specter. "Grisly to behold." Chaucer. A man of grisly and stern gravity. Robynson (More's Utopia). Grisly bear. (Zoöl.) See under Grizzly.

Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals.

Of or pertaining to an hydrometer, or to the determination of the specific gravity of fluids.

The art of determining the specific gravity of liquids, and thence the strength of spirituous liquors, saline solutions, etc.

ite or transparent colorless substance, crystalline, brittle, and viscoidal. Its specific gravity (0.92, that of water at 4° C. being 1.0) being less than that of water, ice floats.

Incapable of being disturbed or disconcerted; as, imperturbable gravity.

ve agents. With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4. Symbol Ir. Atomic weight 192.5.

attacked by many corrosive agents. Symbol Fe (Latin Ferrum). Atomic weight 55.9. Specific gravity, pure iron, 7.86; cast iron, 7.1. In magnetic properties, it is superior to all other substances.

An inclined road in a coal mine, on which loaded cars descend by gravity, drawing up empty ones. Knight.

nstrument for estimating the purity or richness of milk, as a measuring glass, a specific gravity bulb, or other apparatus.

a lady; -- given as a title (preceded by her or your.) Your ladyship shall observe their gravity. B. Jonson.

e, though with little tenacity, and is used for tubes, sheets, bullets, etc. Its specific gravity is 11.37. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic weight, 206.4. Symbol Pb (L. Plumbum). It is chiefly obtained from the mineral galena, lead sulphide.…

hown by rising through, or floating upon, a contiguous substance; buoyancy; -- opposed to gravity. He gave the form of levity to that which ascended; to that which descended, the form of gravity. Sir. W. Raleigh. This bubble by reason of its comparative levity to the fluidity that incloses it, would ascend to the top.…

Having little, or comparatively little, weight; not tending to be the center of gravity with force; not heavy. These weights did not exert their natural gravity . . . insomuch that I could not guess which was light or heavy whilst I held them in my hand. Addison.