| TON | traumatic optic neuropathy |
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| IRMA | 1) Intra-Retinal Microvascular Abnormalities 2) Immuno-Radio-Metric Assay... |
| IMS | incurred in military service; Indian Medical Service; industrial methylated spirit; information mana... |
| MGS | metric gravitational system |
| IRMA | Immuno Radio-Metric Assay |
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| metric ton | (or tonne) 1000 kilograms. 1 metric ton = 2,204.62 lb = 1.023 short tons. (05 Dec 1998) |
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| metric | 1. Relating to measurement; involving, or proceeding by, measurement. 2. Of or pertaining to the meter as a standard of measurement; of or pertaining to the decimal system of measurement of which a meter is the unit; as, the metric system; a metric measurement. <chemistry> Metric analysis, 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 formed the are, the liter, the stere, the gram, etc. These units, and others derived from them, are divided decimally, and larger units are formed from multiples by 10, 100, 1,000, and 10,000. The successive multiplies are designated by the prefixes, deca-, hecto-, kilo-, and myria-; successive parts by deci-, centi-, and milli-. The prefixes mega- and micro- are sometimes used to denote a multiple by one million, and the millionth part, respectively. See the words formed with these prefixes in the Vocabulary. For metric tables, see p. 1682. Origin: L. Metricus, Gr., cf. F. Metrique. See Meter rhythm. Source: Websters Dictionary (01 Mar 1998) |
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| metric system | A system of weights and measures, universal for scientific use, based upon the meter, which was originally intended to be one ten-millionth of a quadrant of the earth's meridian and now is based on the length that light travels in a vacuum in a given period of time (see meter). Prefixes of the meter (and other standards) reflect either fractions or multiples of the meter and are identical to the International System of Units (see International System of Units). The unit of weight is the gram, which is the weight of one cubic centimeter of water, equivalent to 15.432358 grains. The unit of volume is the liter or one cubic decimeter, equal to 1.056688 U.S. Liquid quarts; a cubic centimeter is about 16.23073 U.S. Minims. (05 Mar 2000) |
| electro-metric | Pertaining to electrometry; made by means of electrometer; as, an electrometrical experiment. Origin: Cf. F. Electrometrique. Source: Websters Dictionary (01 Mar 1998) |
| green ton | 2,000 pounds of undried biomass material. Moisture content must be specified if green tons are used as a measure of fuel energy. (05 Dec 1998) |
| short ton | 2000 pounds. A ton, as commonly used in the U.S. And Canada. (05 Dec 1998) |
| dry ton | 2,000 pounds of material dried to a constant weight. (05 Dec 1998) |
| oven dry ton | An amount of wood that weighs 2,000 pounds at zero percent moisture content. (05 Dec 1998) |
| ton | The prevailing fashion or mode; vogue; as, things of ton. "If our people of ton are selfish, at any rate they show they are selfish." (Thackeray) Bon ton. Origin: F. See Tone. A measure of weight or quantity. Specifically: The weight of twenty hundredweight. In England, the ton is 2,240 pounds. In the United States the ton is commonly estimated at 2,000 pounds, this being sometimes called the short ton, while that of 2,240 pounds is called the long ton. Forty cubic feet of space, being the unit of measurement of the burden, or carrying capacity, of a vessel; as a vessel of 300 tons burden. See the Note under Tonnage. A certain weight or quantity of merchandise, with reference to transportation as freight; as, six hundred weight of ship bread in casks, seven hundred weight in bags, eight hundred weight in bulk; ten bushels of potatoes; eight sacks, or ten barrels, of flour; forty cubic feet of rough, or fifty cubic feet of hewn, timber, etc. Ton and tun have the same etymology, and were formerly used interchangeably; but now ton generally designates the weight, and tun the cask. See Tun. Origin: OE. Tonne, tunne, a tun, AS. Tunne a tun, tub, a large vessel; akin to G. & F. Tonne a ton, tun, LL. Tunna a tun; all perhaps of Celtic origin; cf. Ir. & Gael. Tunna a tun. Cf. Tun,Tunnel. <zoology> The common tunny, or house mackerel. Origin: Cf. Tunny. Source: Websters Dictionary (01 Mar 1998) |
| long ton | (shipping ton) 2,240 pounds. Commonly used in Great Britain. (05 Dec 1998) |
| metric ton | a unit of weight equivalent to 1000 kilograms |
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