weight

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Related to atomic weight: molecular weight

weight

(Burden), noun care, cumbrance, duty, incubus, liability, load, mass, obligation, onus, oppression, ponderousness, pressure, responsibility

weight

(Credibility), noun belief, certainty, confidence, credence, credibleness, credit, faith, impressiveness, positiveness, reliance, trustworthiness, validity

weight

(Importance), noun authority, consequence, degree of importance, effect, efficacy, eminence, emphasis, enormity, force, import, impressiveness, influence, interest, magnitude, merit, moment, potency, power, prominence, quality, seriousness, significance, value
Associated concepts: weight of the evidence
Foreign phrases: Ponderantur testes, non numerantur.Witnesses are weighed, not counted. Testimonia ponneranda sunt, non numeranda. Evidence is to be weighed, not counted.
See also: burden, clout, concern, consequence, corpus, degree, dint, dominance, eminence, emphasis, import, importance, incumbrance, influence, interest, load, magnitude, materiality, onus, power, predominance, pressure, prestige, primacy, significance, stress

WEIGHT. A quality in natural bodies, by which they tend towards the centre of the earth.
     2. Under the article Measure, (q.v.) it is said that by the constitution congress possesses the power "to fix the standard of weights and measures," and that this power has not been exercised.
     3. The weights now generally used in the United States, are the same as those of England; they are of two kinds:


     1. AVOIRDUPOIS WEIGHT. 1st. Used in almost all commercial transactions, and in the common dealings of life. 27 1/3 1/2 grains = 1 dram 16 drams = 1 ounce 16 ounces = 1 pound, (lb.) 28 pounds = 1 quarter, (qr.) 4 quarters = 1 hundred weight, (cwt.) 20 hundred weight = 1 ton. 2d. Used for meat and fish. 8 pounds = 1 stone 3d. Used in the wool trade.
     Cwt. qr. lb. 7 pounds = 1 clove 14 pounds = 1 stone = 0 0 14 2 stones = 1 tod = 0 1 0 6 1/2 tods = 1 wey = 1 2 14 2 weys = 1 sack = 3 1 0 12 sacks = 1 last = 39 0 0 4th. Used for butter and cheese. 8 pounds = 1 clove 56 pounds = 1 firkin.
     2. TROY WEIGHT. 24 grams = 1 pennyweight 20 pennyweights = 1 ounce 12 ounces = 1 pound.

     4. These are the denominations of troy weight, when used for weighing gold, silver and precious stones, except diamonds. Troy weight is also used by apothecaries in compounding medicines; and by them the ounce is divided into eight drams, and the drain into three scruples, so that the latter is equal to twenty grains. For scientific purposes, the grain only is used, and sets of weights are constructed in decimal progression, from 10,000 grains downward to one-hundredth of a grain. The caret, used for weighing diamonds, is three and one-sixth grains.
     5. A short account of the French weights and measures is given under the article Measure.

References in periodicals archive ?
In he modern periodic table, the transuranic element of atomic number 101, atomic weight 258, has been named mendelevium; thus contemporary physics commemorates the discoverer in his discovery.
An atomic weight is considered as an outlier when the corresponding continued fraction representation provides a mass value outside the interval "atomic mass [+ or -] standard deviation".
It stimulated discussion and improvement of analysis and forced interest in the determination of accurate atomic weights, and thereby in the atomic theory, and in a search for a system of classification of the elements (16, 17).
If hydrogen was supposed to have an atomic weight of 1, oxygen would have one of 8.
Dense pigments or other additives can induce further errors, explains Fishman, because beta gauges become more composition-sensitive as the atomic weight of the target material goes up.
This year Urey announced that he and his associates had discovered an isotope of hydrogen with an atomic weight of two instead of one.
Nearly 99 percent of the carbon on Earth has an atomic weight of 12 - except in this hen and her eggs.
A note by Mendeleev, in March of 1869, was published and sent in Russian and French to scientists, titled "Experience of Systems of Elements Founded on Their Atomic Weights and Chemical Similarity" (with "atomic weight" to be understood as "atomic mass" here and in the future).
Because isotopes of hydrogen are unevenly distributed in nature, "the standard atomic weight that used to be in the table wasn't actually the atomic weight of any occurrence of hydrogen," says Michael Wieser, an associate professor at the University of Calgary and secretary of the commission.
The foundations of mass spectrometry date back nearly 200 years to John Dalton, who proposed that all matter is composed of elements, that the number and types of atoms corresponded to the exact number and types of elements, and that all elements have a measurable physical property, atomic weight.
But mass fraction averaging is based on atomic weight, which is the total mass of the protons, electrons and neutrons.
We are pleased to support the recognition of the first-ever National Hydrogen and Fuel Cell Day on October 8, aptly chosen to represent the atomic weight of hydrogen (1.