Indicator word meaning and definition
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Meaning and definition for "indicator" word
[noun] 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
[noun] a signal for attracting attention
[noun] (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
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(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.
Synonyms for indicator
index, index number, indicant
See also: acid-base indicator | annunciator | business index | color | dial | fact | fuel gauge | gnomon | indicator lamp | level | Molisch test | oxidation-reduction indicator | pilot light | pointer | price level | reference | reference point | sign | spirit level | wind sock |
Related terms: arbiter, badge, count-rate meter, earmark, fault lamp, flowmeter, his lordship, his worship, humidity indicator, magistrate, moderator, note, pH meter, pyrometer, signal, space probe, stamp, symptom, time-interval meter, trait, turn indicator, vibration meter
The fun area, different aproach to word »indicator«
Let's analyse "indicator" as pure text. This string has Nine letters in Four syllables and Four vowels. 44.4% of vowels is 5.8% more then average English word. Written in backwards: ROTACIDNI. Average typing speed for these characters is 2430 milliseconds. [info]
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Numerology Hearts desire number calculated from vowels:
indicator: 9 + 9 + 1 + 6 = 25, reduced: 7 . and the final result is Seven. |
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