Character 9
Hyphenation in di ca tor
Pronunciations N/A

Definitions and meanings of "Indicator"

What do we mean by indicator?

One that indicates, especially. noun

A pointer or an index. noun

An instrument used to monitor the operation or condition of an engine, furnace, electrical network, reservoir, or other physical system; a meter or gauge. noun

The needle, dial, or other registering device on such an instrument. noun

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 two or more substances by means of a characteristic change, especially in color. noun

An indicator species. noun

Any of various statistical values that together provide an indication of the condition or direction of the economy. noun

One who indicates or points out; that which points out, directs, or reports, as a grade-post on a railroad, the pointer on a steam-gage, etc. noun

Specifically— A steam (cylinder) pressure-gage. It is an apparatus for recording the variations of pressure or vacuum in the cylinder of a steam-engine. The accompanying cut represents a type of the indicator. The pipe with the stop-cock is screwed to the cylinder so that when the cock is opened the pressure of the steam within may enter the cylinder above, press the piston upward against the action of a spring constructed to give a definite resistance in pounds per square inch, and cause the lever-arm to rise and mark on the hollow cylinder at the left a vertical trace, the altitude of which measures the pressure. A card or a sheet of paper may be fitted to this cylinder, and the trace be made on the paper. The hollow cylinder is free to revolve, if drawn by the loose cord hanging from it. To operate the indicator, the cord is connected with some moving part of the engine so that a single stroke of the piston causes the cylinder and the card to revolve once (the return being secured by a spring) as the pencil makes one mark. Since the pencil-mark is timed to one stroke of the engine, the resulting curved line on the card gives a graphic report of the pressure or vacuum of the steam during one complete stroke. Such graphic curves are called indicator-diagrams, the marked card being called an indicator-card. See indicator-diagram, under diagram noun

The dial and pointer of a signal-telegraph used on private lines, where rapidity of delivery of the messages is not important. It consists of a dial having the letters of the alphabet printed upon it, and a pointer that traverses the circle, pausing before the letters of the word transmitted, thus spelling out the message. See telegraph. noun

In a microscope, an arrangement for marking the position of a particular object in the field of view. Quekett's indicator was a steel finger connected with the eyepiece. noun

In mining, an arrangement by means of which the position of the cage in the shaft is known to the man in charge of the winding-engine. noun

In the theory of numbers, the exponent of that power of any number less than and prime to any modulus, which power is the least power of the same number congruous to unity. noun

In anatomy, the extensor indicis, a muscle which extends the forefiuger, as in the act of pointing. It arises from the back of the ulna, and is inserted into the index-finger, which can thus be straightened independently of the other fingers. noun

In ornithology: A honey-guide; a species of the genus Indicator or family Indicatoridæ. noun

capitalized The typical and leading genus of Indicatoridæ, established by Vieillot in 1816. I. major and I. minor are examples. See Indicatoridæ. noun

In railroad signaling, a device for informing the leverman in a signal-cabin that a train is about to start from the station and indicating which track it will take; in its broadest sense, any appliance for displaying, in the signal-cabin, the condition of a track or of all the tracks in a yard, the position of the signals, semaphores, switches, and signal-lamps, the trains at rest, or moving, or about to enter or leave any block, etc. The indicator may be a number on a drop-plate, a disk or banneret, or a miniature signal-arm, and it may give information by its appearance or disappearance or by its position. It may also give a signal by means of a bell. An indicator may be operated from a distant station or cabin by a push-button, or it may be automatic, or it may be controlled by a train through a track-circuit. noun

In mining, an appearance of the surface of the ground which shows the presence of a mineral underneath. noun

Naval: An apparatus used in conjunction with a transmitter, operated by mechanical or electrical means for signaling orders from a central position to the various places on a war-ship at which the orders are to be executed. The transmitter is manipulated by the operator in the central station or in the conning-tower to show any desired order, and the same order is shown on one or more indicators connected to the transmitter by wires or shafting. A range-indicator shows the range of the object at which the guns are to be fired; a battle-order indicator shows various orders such as ‘commence firing,’ ‘load with shell,’ etc. An apparatus to show at a convenient Point the position of any mechanism: as, a revolution-indicator to show the direction of revolution of the main engines; a rudder -indicator, to show the position of the helm or rudder; a turret-indicator, to show the position of the turret guns with reference to the fore-and-aft line of the ship; etc. noun

A pointer or index that indicates something.

A meter or gauge.

The needle or dial on such a meter.

Any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction.

A plant or animal whose presence is indicative of some specific environment.

A measure, such as unemployment rate, which can be used to predict economic trends.

A turn signal; each of the flashing lights on each side of a vehicle which indicate a turn is being made to left or right, or a lane change etc.

A bird, the honeyguide.

Synonyms and Antonyms for Indicator

  • Antonyms for indicator
  • Indicator antonyms not found!

The word "indicator" in example sentences

Another indicator is the 2006 Zogby poll that found 67 percent of citizens wanted immigration decreased so we can assimilate those already here. ❋ Unknown (2008)

Another indicator is an e-mail from AIWF and the Dallas Farmers Market outlining their fall line-up of cooking classes. ❋ Unknown (2007)

But the really troubling part of this indicator is the large number of countries with less than one line per 100 people. ❋ Unknown (2001)

Another indicator is the rate of new capital investment, which is running at the very high level of 22 percent of the gross national product, as compared with 14 percent in 1946, and 23 percent in 1948 during the period of post-war expansion. ❋ Unknown (1960)

The European refining margin indicator in the third quarter stood at $16.4 perton, up 37% from a year earlier, but down compared to the average $31.2 per ton in the second quarter and $29.1 in the first quarter. ❋ Geraldine Amiel (2010)

For these pundits, the most dismal indicator is that we have a Republican Administration. ❋ Unknown (2009)

The Bank said it will still publish details of its balance sheet, but, significantly, the data – the main indicator of the extent of quantitative easing – will not be presented until more than a month has elapsed. ❋ Not A Sheep (2009)

And I think that I figured out that an indicator is a ‘signal light, ’like a blinker to change lanes or a back up light??? ❋ Unknown (2010)

And the new loading indicator is annoying and really ugly. ❋ Unknown (2009)

"What we've seen thus far this quarter is that the stocks tend to react much more on the f low story" because it's seen as a better long-term indicator of earnings potential, Sandler O'Neill analyst Michael Kim said. ❋ Jon Kamp (2011)

The most common indicator is infant mortality, the percentage of babies born who die before their first birthday. ❋ Unknown (2009)

Another optimistic indicator is that educational attainment continues to rise with each generation, particularly among immigrants. ❋ Unknown (2009)

TrimTabs says its most recent indicator is still bullish. ❋ Brett Arends (2010)

So you want to change the way the indicator is collected to hopefully fuel what you THINK might help your argument!! ❋ Unknown (2009)

O nthe last day of the hunt I saw him moving something around with his foot, he asked "what is this, bear poop?", to which I replied, "human, the toilet paper behind you being the main indicator". ❋ Unknown (2009)

Tom, I thought you would gather that my nudging link to Mike Gene's blog entry was an indiicator that a teleological process could be feasible without a preset target although a directional indicator is embedded in front loading. ❋ Unknown (2009)

Cross Reference for Indicator

What does indicator mean?

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