Crossword clues for equivalent
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Equivalent \E*quiv"a*lent\, v. t. To make the equivalent to; to equal; equivalence. [R.]
Equivalent \E*quiv"a*lent\ ([-e]*kw[i^]v"[.a]*lent), a. [L. aequivalens, -entis, p. pr. of aequivalere to have equal power; aequus equal + valere to be strong, be worth: cf. F.
-
Equal in worth or value, force, power, effect, import, and the like; alike in significance and value; of the same import or meaning.
For now to serve and to minister, servile and ministerial, are terms equivalent.
--South. (Geom.) Equal in measure but not admitting of superposition; -- applied to magnitudes; as, a square may be equivalent to a triangle.
(Geol.) Contemporaneous in origin; as, the equivalent strata of different countries.
Equivalent \E*quiv"a*lent\ ([-e]*kw[i^]v"[.a]*lent), n.
-
Something equivalent; that which is equal in value, worth, weight, or force; as, to offer an equivalent for damage done.
He owned that, if the Test Act were repealed, the Protestants were entitled to some equivalent. . . . During some weeks the word equivalent, then lately imported from France, was in the mouths of all the coffeehouse orators.
--Macaulay. -
(Chem.) That comparative quantity by weight of an element which possesses the same chemical value as other elements, as determined by actual experiment and reference to the same standard. Specifically: (a) The comparative proportions by which one element replaces another in any particular compound; thus, as zinc replaces hydrogen in hydrochloric acid, their equivalents are 32.5 and
-
(b) The combining proportion by weight of a substance, or the number expressing this proportion, in any particular compound; as, the equivalents of hydrogen and oxygen in water are respectively 1 and 8, and in hydric dioxide 1 and 16.
Note: This term was adopted by Wollaston to avoid using the conjectural expression atomic weight, with which, however, for a time it was practically synonymous. The attempt to limit the term to the meaning of a universally comparative combining weight failed, because of the possibility of several compounds of the substances by reason of the variation in combining power which most elements exhibit. The equivalent was really identical with, or a multiple of submultiple of, the atomic weight.
-
-
(Chem.) A combining unit, whether an atom, a radical, or a molecule; as, in acid salt two or more equivalents of acid unite with one or more equivalents of base.
Mechanical equivalent of heat (Physics), originally defined as the number of units of work which the unit of heat can perform, equivalent to the mechanical energy which must be expended to raise the temperature of a pound of water one degree Fahrenheit; later this value was defined as one British thermal unit (B.t.u). Its value was found by Joule to be 772 foot pounds; later measurements give the value as 777.65 foot-pounds, equivalent to 107.5 kg-meters. This value was originally called Joule's equivalent, but the modern Joule is defined differently, being 10^ 7 ergs. The B.t.u. is now given as 1,05
-
35 absolute Joules, and therefore 1 calorie (the amount of heat needed to raise one gram of water one degree centigrade) is equivalent to 4.186 Joules.
Note: The original definition of the Mechanical equivalent of heat in the 1913 Webster was as below. The difference between foot pounds and kilogram-meters ("on the centigrade scale") is puzzling as it should be a factor of 7.23, and the figure given for kilogram-meters may be a mistaken misinterpretation of the report. -- PJC: The number of units of work which the unit of heat can perform; the mechanical energy which must be expended to raise the temperature of a unit weight of water from 0[deg] C. to 1[deg] C., or from 32[deg] F. to 33[deg] F. The term was introduced by Dr. Mayer of Heilbronn. Its value was found by Joule to be 1390 foot pounds upon the Centigrade, or 772 foot pounds upon the Fahrenheit, thermometric scale, whence it is often called Joule's equivalent, and represented by the symbol J. This is equal to 424 kilogram meters (Centigrade scale). A more recent determination by Professor Rowland gives the value 426.9 kilogram meters, for the latitude of Baltimore.
Douglas Harper's Etymology Dictionary
early 15c., from Middle French equivalent and directly from Late Latin aequivalentem (nominative aequivalens) "equivalent," present participle of aequivalere "be equivalent," from Latin aequus "equal" (see equal (adj.)) + valere "be well, be worth" (see valiant). As a noun from c.1500, "that which is equal or corresponds to." Related: Equivalently.
Wiktionary
similar or identical in value, meaning or effect; virtually equal. n. 1 Anything that is virtually equal to something else, or has the same value, force, etc. 2 (context chemistry English) An equivalent weight. v
(context transitive English) To make equivalent to; to equal.
WordNet
adj. equal in amount or value; "like amounts"; "equivalent amounts"; "the same amount"; "gave one six blows and the other a like number"; "an equal number"; "the same number" [syn: like, equal, same] [ant: unlike]
being essentially equal to something; "it was as good as gold"; "a wish that was equivalent to a command"; "his statement was tantamount to an admission of guilt" [syn: tantamount(p)]
n. a person or thing equal to another in value or measure or force or effect or significance etc; "send two dollars or the equivalent in stamps"
the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen [syn: equivalent weight, combining weight, eq]
Wikipedia
The Equivalent (symbol: Eq), was an archaic unit used in chemistry and the biological sciences in the era before chemical formulas and equations were known. It represented the quantity of a substance which reacted exactly with (or was equivalent to) an arbitrarily fixed quantity of another substance in a particular reaction. As knowledge increased, the theoretical basis for these 'chemical equivalents' became understood and the need for a common standard using the concept of Equivalent weights developed. The equivalent weight of a chemical element is the gram atomic weight divided by its valence. The equivalent can also be formally defined through the amount of substance which will either:
- react with or supply one mole of hydrogen ions (H) in an acid–base reaction; or
- react with or supply one mole of electrons in a redox reaction.
Given this definition, an equivalent may also be defined as the number of moles of a given ion in a solution multiplied by the valence of that ion. So, if 1 mol of NaCl and 1 mol of CaCl are dissolved in a solution, there is 1 Eq Na, 2 Eq Ca, and 3 Eq Cl in that solution. (Note that the valence of Ca is 2, so for that ion you have 1 mole and 2 equivalents.)
The mass of one equivalent of a substance is called its equivalent weight.
A historical definition, used especially for the chemical elements, describes an equivalent as the amount of a substance that will react with of hydrogen, or with of oxygen, or with of chlorine, or displaces any of the three.
In practice, the amount of a substance in equivalents often has a very small magnitude, so it is frequently described in terms of milliequivalents (meq or mEq), the prefix milli denoting that the measure has been multiplied by 1000. Very often, the measure is used in terms of milliequivalents of solute per litre of solvent (or milliNormal, where ). This is especially common for measurement of compounds in biological fluids; for instance, the healthy level of potassium in the blood of a human is defined between 3.5 and 5.0 meq/L.
A certain amount of univalent ions provides the same amount of equivalents while the same amount of divalent ions provides twice the amount of equivalents. For example, 1 mmol of Na is equal 1 meq, while 1 mmol of Ca is equal 2 meq.
Usage examples of "equivalent".
To the suspension is then added slowly a solution of about two equivalents of trifluoroacetic anhydride dissolved in acetonitrile and previously cooled to about -20 degrees C.
Like many blacks from their home country-his and hers-for whom English and Afrikaans are lingue franche, not mother tongues, he used the Afrikaans phrase translated literally, instead of the English equivalent.
After an unsuccessful year at the University of Toronto, he joined the Royal Canadian Air Force but was never promoted beyond Leading Aircraftman, the equivalent of an army lance-corporal, spending most of his time as an editorial assistant on Wings Abroad, a propaganda weekly.
One such bomb, Admiral Leahy told Albright, would have an explosive force equivalent to that of twenty thousand tons of trinitrotoluene, better known as TNT.
As things now stood, the other could appear in public and perform the amoeboid equivalent of thumbing his nose at the Hunter without any risk to itself.
Hilmaran Kingdom in Arcana whose territory includes the equivalent of Guyana, Surinam, and French Guiana.
I had to pull every string I knew, behind the scenes, to get the geniuses at JPL to send their two Viking landers to the Martian equivalents of Death Valley and the Atacama Desert in Chile.
Asked to explain his sudden possession of 100,000 francs at a moment when he was apparently without a penny, he repeated his statement that Auguste had given him the capital sum as an equivalent for an income of 4,000 francs which his brother had intended to leave him.
The quality was not nearly as good as the European equivalent but that did not matter because guns were considered merely a novelty and, for a long time, used only for hunting-and even for that bows were far more accurate.
France, Italy, where, by the way, the Camorrist type is the equivalent for our New York gangster.
In making this point, he was simultaneously rejecting the Cartesian, theological notion of all activities of the human soul occurring outside of nature and the materialist premise that subjective states either do not exist or else must be equivalent to objective, physical processes.
Our ceramic cassegrain lasers were far superior to the nearest Terran equivalents, though not many Venerians cared to use weapons so heavy and unpleasant for the shooter.
The blood test, analyzed at speed because of the bang on my head, had revealed a level of 290 milligrams of alcohol per centiliter of blood, which, I had been assured, meant that I had drunk the equivalent of at least half a bottle of spirits during the preceding few hours.
An explanation being solicited, the fact was revealed that there was a man inside who made a practice of buying twelve tickets for a dollar, then seating himself near the bell, he would take the fares of every one and give the driver a ticket for each, that is, receive ten cents and give the driver the equivalent of eight and one-third cents, thereby making ten cents on every six passengers.
Kelvin and Rudolf Clausius were formulating two versions of the second law of thermodynamics, versions later shown to be equivalent, and both of which were taken to mean: the universe is running down.