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Height; stature. [Obs.] Hudibras.

the velocity of running water, by placing the curved end under water, and observing the height to which the fluid rises in the tube; a kind of current meter.

A division of gastropod Mollusca, including the chitons. The back is covered by eight shelly plates. Called also Polyplacophora. See Illust. under Chiton, and Isopleura.

A European food fish (Pleuronectes platessa), allied to the flounder, and growing to the weight of eight or ten pounds or more.

coin, and in the form of foil and wire for many purposes. Specific gravity 21.5. Atomic weight 194.3. Symbol Pt. Formerly called platina. Platinum black (Chem.), a soft, dull black powder, consisting of finely divided metallic platinum obtained by reduction and precipitation from its solutions. It absorbs oxygen to a…

A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to indicate a vertical direction; a plummet; a plumb bob. See Plumb line, below. Plumb bob. See Bob, 4. -- Plumb joint, in sheet-metal work, a lap joint, fastened by solder. -- Plumb level. See under Level. -- Plumb line. (…

Hence, any weight.

e which treats of the mechanical properties of air and other elastic fluids, as of their weight, pressure, elasticity, etc. See Mechanics.

Weight; gravity; that which causes a body to descend; heaviness. "Weights of an extraordinary poise." Evelyn.

Weight. [Obs.]

A tree having its top cut off at some height above the ground, that may throw out branches. Pennant.

A genus of bitter herbs or shrubs having eight stamens and a two-celled ovary (as the Seneca snakeroot, the flowering wintergreen, etc.); milkwort.

rcentage composition (that is, having the same elements united in the same proportion by weight), but different molecular weights; -- often used with with; thus, cyanic acid (CNOH), fulminic acid (C2N2O2H2), and cyanuric acid (C3N3O3H3), are polymeric with each other.

To cause polymerization of; to produce polymers from; to increase the molecular weight of, without changing the atomic proportions; thus, certain acids polymerize aldehyde.

Capable of being weighed; having appreciable weight. -- Pon"der*a*ble*ness, n.

Estimated or ascertained by weight; -- distinguished from numeral; as, a ponderal drachma. [R.] Arbuthnot.

Weight; gravity. [R.] Gregory.

Of or pertaining to weight; as, a ponderary system. [R.] M'Culloch.

To have weight or influence. [R.]

The quality or state of being ponderous; weight; gravity; heaviness, ponderousness; as, the ponderosity of gold. Ray.