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Definition of Indicator
1. 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.
Generic synonyms: Fact
Specialized synonyms: Bmi, Body Mass Index, Business Index, Leading Indicator, Price Index, Price Level, Short Account, Stock Index, Stock Market Index
2. Noun. A signal for attracting attention.
Specialized synonyms: Point Of Reference, Reference, Reference Point
Derivative terms: Indicate
3. Noun. A device for showing the operating condition of some system.
Generic synonyms: Device
4. 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.
Specialized synonyms: Absorption Indicator, Acid-base Indicator, Alpha-naphthol Test, Molisch Reaction, Molisch Test, Molisch's Test, Oxidation-reduction Indicator
Generic synonyms: Color, Coloring Material, Colour, Colouring Material
Definition of Indicator
1. n. One who, or that which, shows or points out; as, a fare indicator in a street car.
Definition of Indicator
1. Noun. A pointer or index that indicates something. ¹
2. Noun. A meter or gauge. ¹
3. Noun. The needle or dial on such a meter. ¹
4. Noun. (chemistry) Any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction. ¹
5. Noun. (ecology) A plant or animal whose presence is indicative of some specific environment. ¹
6. Noun. (economics) A measure, such as unemployment rate, which can be used to predict economic trends. ¹
7. Noun. (U.K.) A trafficator. ¹
¹ Source: wiktionary.com
Definition of Indicator
1. [n -S]
Medical Definition of Indicator
1. An event, entity or condition that typically characterises a prescribed environment or situation, indicators determine or aid in determining whether or not certain stated circumstances exist or criteria are satisfied. (09 Oct 1997)