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indicator - 9 dictionary results
Indicator
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in⋅di⋅ca⋅tor
[in-di-key-ter] 
dɪˌkeɪ
–noun
| 1. | a person or thing that indicates. |
| 2. | a pointing or directing device, as a pointer on the dial of an instrument to show pressure, temperature, speed, volume, or the like. |
| 3. | an instrument that indicates the condition of a machine or the like. |
| 4. | an instrument for measuring and recording variations of pressure in the cylinder of an engine. |
| 5. | Chemistry.
|
| 6. | Ecology. a plant, animal, or species that indicates, by its presence in a given area, the existence of certain environmental conditions. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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|
Link To indicator
| in·di·ca·tor (ĭn'dĭ-kā'tər) n.
|
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Indicator
In"di*ca`tor\ ([i^]n"d[i^]*k[=a]`t[~e]r), n. [L.: cf. F. indicateur.]1. One who, or that which, shows or points out; as, a fare indicator in a street car. 2. (Mach.) A pressure gauge; a water gauge, as for a steam boiler; an apparatus or instrument for showing the working of a machine or moving part; as: (a) (Steam Engine) An instrument which draws a diagram showing the varying pressure in the cylinder of an engine or pump at every point of the stroke. It consists of a small cylinder communicating with the engine cylinder and fitted with a piston which the varying pressure drives upward more or less against the resistance of a spring. A lever imparts motion to a pencil which traces the diagram on a card wrapped around a vertical drum which is turned back and forth by a string connected with the piston rod of the engine. See Indicator card (below). (b) A telltale connected with a hoisting machine, to show, at the surface, the position of the cage in the shaft of a mine, etc. 3. (Mech.) The part of an instrument by which an effect is indicated, as an index or pointer. 4. (Zo["o]l.) Any bird of the genus Indicator and allied genera. See Honey guide, under Honey. 5. (Chem.) That which indicates the condition of acidity, alkalinity, or the deficiency, excess, or sufficiency of a standard reagent, by causing an appearance, disappearance, or change of color, as in titration or volumetric analysis. Note: The common indicators are litmus, trop[ae]olin, phenol phthalein, potassic permanganate, etc. Indicator card, the figure drawn by an engine indicator, by means of which the working of the engine can be investigated and its power calculated. The Illustration shows one form of indicator card, from a steam engine, together with scales by which the pressure of the steam above or below that of the atmosphere, corresponding to any position of the engine piston in its stroke, can be measured. Called also indicator diagram. Indicator telegraph, a telegraph in which the signals are the deflections of a magnetic needle, as in the trans-Atlantic system.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Language Translation for : indicator
Spanish:
indicador; intermitente (coche),
German:
der Anzeiger,
Japanese:
表示器
Indicator
Anything used to predict future financial or economic trends.
Investopedia Commentary
In the context of technical analysis, an indicator is a mathematical calculation based on a securities price and/or volume. The result is used to predict future prices. In an economic context, an indicator could be a measure such as the unemployment rate which can be used to predict future economic trends.
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See also: Coincident Indicator, DJIA, Inflation, Interest Rates, Lagging Indicator, Leading Indicator, Technical Analysis
Investopedia.com. Copyright © 1999-2005 - All rights reserved. Owned and Operated by Investopedia Inc.
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indicator
- A variable used to forecast the value or change in the value of another variable. For example, changes in the producer price index are used to forecast subsequent changes in the consumer price index. Likewise, some financial analysts believe a change in the money supply is an indicator of the direction of the stock market. See also technical indicator.
Wall Street Words: An A to Z Guide to Investment Terms by David L. Scott.
Copyright © 2003. Published by Houghton Mifflin.
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Copyright © 2003. Published by Houghton Mifflin.
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Main Entry: in·di·ca·tor
Pronunciation: 'in-d&-"kAt-&r
Function: noun
: a substance (as a dye) used to show visually usually byits capacity for color change the condition of a solution with respect to the presence of free acid or alkali or some other substance (as in detecting the end point of a titration)
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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indicator in·di·ca·tor (ĭn'dĭ-kā'tər)
n.
- One that indicates, especially a pointer or an index.
- An instrument used to monitor the operation or condition of an engine, an electrical network, or another physical system; a meter or gauge.
- The needle, dial, or other registering device on such an instrument.
- Any of various substances, such as litmus or phenolphthalein, that indicate the presence, absence, or concentration of another substance or the degree of reaction between substances by means of a characteristic change, especially in color.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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| indicator (ĭn'dĭ-kā'tər) Pronunciation Key
A chemical compound that changes color and structure when exposed to certain conditions and is therefore useful for chemical tests. Litmus, for example, is an indicator that becomes red in the presence of acids and blue in the presence of bases. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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indicator
any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution. If acid is slowly added, the solution remains yellow until all the alkali has been neutralized, whereupon the colour suddenly changes to red
Learn more about indicator with a free trial on Britannica.com.
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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