One who, or that which, shows or points out; as, a fare indicator in a street car.
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
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).
A telltale connected with a hoisting machine, to show, at the surface, the position of the cage in the shaft of a mine, etc.
The part of an instrument by which an effect is indicated, as an index or pointer.
Any bird of the genus Indicator and allied genera. See Honey guide, under Honey.
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.
In the rich world, the environmental situation has improved dramatically. In the United States, the most important environmental indicator, particulate air pollution, has been cut by more than half since 1955, rivers and coastal waters have dramatically improved, and forests are increasing. Bjorn Lomborg
In the long run, your human capital is your main base of competition. Your leading indicator of where you're going to be 20 years from now is how well you're doing in your education system. Bill Gates
Inability to make decisions is one of the principal reasons executives fail. Deficiency in decision-making ranks much higher than lack of specific knowledge or technical know-how as an indicator of leadership failure. John C. Maxwell
I have nowhere claimed nor even implied that unbelief is a guarantee of good conduct or even an indicator of it. Christopher Hitchens
What's hurting the U.S. economy is total government spending. The deficit is an indicator that the government is spending so much money that it can't even get around to stealing all of the money that it wants to spend. But the tip of the iceberg is not what hit the Titanic - it was the 90 percent of the iceberg under water. Grover Norquist