indicator
[ in-di-key-ter ]
/ ˈɪn dɪˌkeɪ tər /
noun
a person or thing that indicates.
a pointing or directing device, as a pointer on the dial of an instrument to show pressure, temperature, speed, volume, or the like.
an instrument that indicates the condition of a machine or the like.
an instrument for measuring and recording variations of pressure in the cylinder of an engine.
Chemistry.
Ecology.
a plant, animal, or species that indicates, by its presence in a given area, the existence of certain environmental conditions.
Words nearby indicator
indicanuria,
indicate,
indicated horsepower,
indication,
indicative,
indicator,
indicator diagram,
indicator species,
indices,
indicia,
indicial
Example sentences from the Web for indicator
British Dictionary definitions for indicator
indicator
/ (ˈɪndɪˌkeɪtə) /
noun
Medical definitions for indicator
indicator
[ 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.
Scientific definitions for indicator
indicator
[ ĭn′dĭ-kā′tər ]
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.