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nouna 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
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nouna device for showing the operating condition of some systemtype of:
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nouna signal for attracting attention
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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 reactiontype of:
Definition that contains indicator
- level indicator that establishes the horizontal when a bubble is centered in a tube of liquid
- pilot light indicator consisting of a light to indicate whether power is on or a motor is in operation
- spirit level indicator that establishes the horizontal when a bubble is centered in a tube of liquid
- tidemark indicator consisting of a line at the highwater or low-water limits of the tides
- indicator lamp indicator consisting of a light to indicate whether power is on or a motor is in operation
- gnomon indicator provided by the stationary arm whose shadow indicates the time on the sundial
- pilot lamp indicator consisting of a light to indicate whether power is on or a motor is in operation