| 释义 |
touchstone
touch·stone T0287800 (tŭch′stōn′)n.1. A hard black stone, such as jasper or basalt, formerly used to test the quality of gold or silver by comparing the streak left on the stone by one of these metals with that of a standard alloy.2. An excellent quality or example that is used to test the excellence or genuineness of others: "the qualities of courage and vision that are the touchstones of leadership" (Henry A. Kissinger).touchstone (ˈtʌtʃˌstəʊn) n1. a criterion or standard by which judgment is made2. (Minerals) a hard dark siliceous stone, such as basalt or jasper, that is used to test the quality of gold and silver from the colour of the streak they produce on ittouch•stone (ˈtʌtʃˌstoʊn)
n. 1. a test or criterion for the qualities of a thing. 2. a black stone once used to test gold and silver by rubbing them on it. [1475–85] Thesaurus| Noun | 1. | touchstone - a basis for comparison; a reference point against which other things can be evaluated; "the schools comply with federal standards"; "they set the measure for all subsequent work"criterion, standard, measurebenchmark - a standard by which something can be measured or judged; "his painting sets the benchmark of quality"earned run average, ERA - (baseball) a measure of a pitcher's effectiveness; calculated as the average number of earned runs allowed by the pitcher for every nine innings pitchedGPA, grade point average - a measure of a student's academic achievement at a college or university; calculated by dividing the total number of grade points received by the total number attemptedprocrustean bed, procrustean rule, procrustean standard - a standard that is enforced uniformly without regard to individualityyardstick - a measure or standard used for comparison; "on what kind of yardstick is he basing his judgment?"medium of exchange, monetary system - anything that is generally accepted as a standard of value and a measure of wealth in a particular country or regionsystem of measurement, metric - a system of related measures that facilitates the quantification of some particular characteristicgraduated table, ordered series, scale, scale of measurement - an ordered reference standard; "judging on a scale of 1 to 10"standard of measurement, gauge - accepted or approved instance or example of a quantity or quality against which others are judged or measured or comparedbaseline - an imaginary line or standard by which things are measured or compared; "the established a baseline for the budget"norm - a standard or model or pattern regarded as typical; "the current middle-class norm of two children per family" |
touchstonenoun standard, measure, par, criterion, norm, gauge, yardstick Job security has become the touchstone of a good job.touchstonenounA means by which individuals are compared and judged:benchmark, criterion, gauge, mark, measure, standard, test, yardstick.Translationstouchstone
touchstone a hard dark siliceous stone, such as basalt or jasper, that is used to test the quality of gold and silver from the colour of the streak they produce on it Touchstone a poorly metamorphosed, fine-grained carbonaceous or siliceous slate in the form of a black bar that is used to determine the fineness of a precious metal from the color of the streak made by the metal on the stone. The basic requirements for a touchstone are a hardness of 4.7–6.5 on Mohs’ scale and an 8- to 23-percent C content; in addition, a touchstone can contain no more than 2 percent admixed materials, such as Al, Fe, Ca, Mn, S, Na, and Cl. It should have no fractures and should not react with inorganic acids or their mixtures. In the USSR rocks called schungites, which meet the above requirements, are found in the Urals, at the mouth of the Chernaia Aragvi River near Tbilisi, and in the Usovaia Gora quarry in the Karelian ASSR. Rich deposits of siliceous slate are located in the western part of Asia Minor, in the region previously occupied by the ancient country of Lydia, from which derives the name Lydian stone for the rock. A process has been developed for the manufacture of artificial touchstones by sintering or smelting a batch of a certain composition that has been prepared in advance. However, these stones are inferior in quality to high-grade natural touchstones. Touchstonea “motley-mined,” “roynish” court jester. [Br. Lit.: As You Like It]See: ClownsAcronymsSeeTSTNtouchstone
Synonyms for touchstonenoun standardSynonyms- standard
- measure
- par
- criterion
- norm
- gauge
- yardstick
Synonyms for touchstonenoun a means by which individuals are compared and judgedSynonyms- benchmark
- criterion
- gauge
- mark
- measure
- standard
- test
- yardstick
Synonyms for touchstonenoun a basis for comparisonSynonymsRelated Words- benchmark
- earned run average
- ERA
- GPA
- grade point average
- procrustean bed
- procrustean rule
- procrustean standard
- yardstick
- medium of exchange
- monetary system
- system of measurement
- metric
- graduated table
- ordered series
- scale
- scale of measurement
- standard of measurement
- gauge
- baseline
- norm
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