| 单词 | indicator |
| 释义 | indicator (once / 2025 pages) 1n 2n If you're familiar with the verb to "indicate," then indicator should be no problem. An indicator points to, suggests, or shows something. The arrow on a street sign is an indicator telling you which way to go. "It's not the heat, it's the humidity!" In other words, temperature is only one indicator of how it feels outside. Air-pressure, humidity, wind-chill, and cloud cover are other important indicators of weather conditions. You might hear a lot from newscasters about "economic indicators." These are figures, such as the rate of unemployment or inflation, that indicate where we're headed economically. Good or bad, we need reliable indicators if we're going to recover economically. Not all the indicators say the same thing: some say we're going to be OK sooner than others. WORD FAMILYindicator: indicators+/indicate: indicated, indicates, indicating, indication, indicative, indicator, indicatory/indication: indications, preindication/indicative: indicatively, indicatives USAGE EXAMPLESAt times, he found himself running around his neighborhood in the dark until his calorie-burn indicator reset to zero at midnight. New York Times(May 02, 2016) Leading economic indicators — such as job growth and increases in total personal income — show the city continues to thrive, Lazere said. Washington Post(Dec 31, 2016) Furman also suggested that consumer confidence was a lagging indicator. Los Angeles Times(Dec 31, 2016) 1 1n a device for showing the operating condition of some system Hypo|Hyper annunciator an indicator that announces which electrical circuit has been active (as on a telephone switchboard) cursor, pointer(computer science) indicator consisting of a movable spot of light (an icon) on a visual display; moving it allows the user to point to commands or screen positions dialthe circular graduated indicator on various measuring instruments fuel gauge, fuel indicatoran indicator of the amount of fuel remaining in a vehicle gnomonindicator provided by the stationary arm whose shadow indicates the time on the sundial level, spirit levelindicator that establishes the horizontal when a bubble is centered in a tube of liquid indicator lamp, pilot lamp, pilot lightindicator consisting of a light to indicate whether power is on or a motor is in operation pointeran indicator as on a dial scalean indicator having a graduated sequence of marks test paperpaper impregnated with an indicator for use in chemical tests tidemarkindicator consisting of a line at the highwater or low-water limits of the tides handa rotating pointer on the face of a timepiece electronic stylus, light pen(computer science) a pointer that when pointed at a computer display senses whether or not the spot is illuminated mason's levela level longer than a carpenter's level needlea slender pointer for indicating the reading on the scale of a measuring instrument vernier, vernier scalea small movable scale that slides along a main scale; the small scale is calibrated to indicate fractional divisions of the main scale device an instrumentality invented for a particular purpose 2n (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction Hypo|Hyper absorption indicator an indicator used in reactions that involve precipitation acid-base indicatoran indicator that changes color on going from acidic to basic solutions Molisch reaction, Molisch test, Molisch's test, alpha-naphthol testbiochemical indicator of the presence of carbohydrates in a solution; if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid oxidation-reduction indicatoran indicator that shows a reversible color change between oxidized and reduced forms phenolphthaleina laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8 congo reda red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions) methyl orangean azo dye used as an acid-base indicator; used for titrations involving weak bases litmus, litmus testa coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator bromophenol blue, bromphenol blue, tetrabromo-phenolsulfonephthaleina dye used as an acid-base indicator bromothymol blue, bromthymol bluea dye used as an acid-base indicator fluorescein, fluoresceine, fluorescent dye, resorcinolphthaleina yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) color, coloring material, colour, colouring material any material used for its color 3n a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time 2Syn|Exp|Hypo|Hyper index, index number, indicant Dow-Jones Industrial Average an indicator of stock market prices; based on the share values of 30 blue-chip stocks listed on the New York Stock Exchange Standard and Poor's Indexa broadly based stock market index BMI, body mass index a measure of someone's weight in relation to height; to calculate one's BMI, multiply one's weight in pounds and divide that by the square of one's height in inches; overweight is a BMI greater than 25; obese is a BMI greater than 30 business indexa statistical compilation that provides a context for economic or financial conditions leading indicatorone of 11 indicators for different sections of the economy; used by the Department of Commerce to predict economic trends in the near future price index, price levelan index that traces the relative changes in the price of an individual good (or a market basket of goods) over time short accountthe aggregate of short sales on an open market stock index, stock market indexindex based on a statistical compilation of the share prices of a number of representative stocks retail price indexan index of changes in retail prices producer price index, wholesale price indexan index of changes in wholesale prices CPI, consumer price index, cost-of-living indexan index of the cost of all goods and services to a typical consumer fact a statement or assertion of verified information about something that is the case or has happened n a signal for attracting attention Hypo|Hyper point of reference, reference, reference point an indicator that orients you generally bench mark, benchmarka surveyor's mark on a permanent object of predetermined position and elevation used as a reference point landmarka mark showing the boundary of a piece of land lubber line, lubber's line, lubber's mark, lubber's pointa fixed line on a ship's compass indicating its heading mark, targeta reference point to shoot at white linea white stripe in the middle of a road to mark traffic lanes buoybright-colored; a float attached by rope to the seabed to mark channels in a harbor or underwater hazards sign, signal, signaling any nonverbal action or gesture that encodes a message |
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