Indicator may refer to:
Biology
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Environmental indicator of environmental health (pressures, conditions and responses)
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Ecological indicator of ecosystem health (ecological processes)
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Health indicator
Health indicators are quantifiable characteristics of a population which researchers use as supporting evidence for describing the health of a population. Typically, researchers will use a survey methodology to gather information about a populatio ...
, which is used to describe the health of a population
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Honeyguide
Honeyguides (family Indicatoridae) are near passerine birds in the order Piciformes. They are also known as indicator birds, or honey birds, although the latter term is also used more narrowly to refer to species of the genus '' Prodotiscus''. Th ...
s, also known as "indicator birds", a family of Old World tropical birds
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''Indicator'' (genus), a genus of birds in the honeyguide family
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Indicator species
A bioindicator is any species (an indicator species) or group of species whose function, population, or status can reveal the qualitative status of the environment. The most common indicator species are animals. For example, copepods and other sma ...
, a species that defines a characteristic of an environment
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Indicator bacteria
Indicator bacteria are types of bacteria used to detect and estimate the level of fecal contamination of water. They are not dangerous to human health but are used to indicate the presence of a health risk.
Each gram of human feces contains app ...
, bacteria used to detect and estimate the level of fecal contamination of water
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Indicator organism, organisms used to measure such things as potential fecal contamination of environmental samples
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Indicator plant, a plant that acts as a measure of environmental conditions
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Indicator value, one of two terms in ecology referring to the classification of organisms
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Iodine–starch test, a method to test for the presence of starch or iodine.
Chemistry
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Complexometric indicator, a chemical detector for metal ions in complexometric titrations.
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Humidity indicator card
A humidity indicator card (HIC) is a card on which a moisture-sensitive chemical is impregnated such that it will change color when the indicated relative humidity is exceeded. This has usually been a blotting paper impregnated with cobalt(II) ch ...
, a card impregnated with chemicals that change colour when a particular humidity is exceeded.
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pH indicator, a chemical detector for protons in acid-base titrations.
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Redox indicator, a chemical detector for redox titrations.
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Zeta potential, a property of interfaces in fluids for Zeta potential titration.
Economics
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Economic indicator
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Performance indicator
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Technical indicator, a tool used in the technical analysis of financial securities
Mathematics, engineering, and industry
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Indicator (distance amplifying instrument)
In various contexts of science, technology, and manufacturing (such as machining, fabricating, and additive manufacturing), an indicator is any of various instruments used to accurately measure small distances and angles, and amplify them to ma ...
, any of various instruments used to accurately measure small distances, and amplify them to make them more obvious
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Indicator (metadata), a Boolean value that may contain only the values true or false and includes the meaning of these values
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Indicator (statistics), a concept in statistics, research design and social sciences
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Indicator diagram, a graph of pressure against stroke within a piston engine
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Indicator function
In mathematics, an indicator function or a characteristic function of a subset of a set is a function that maps elements of the subset to one, and all other elements to zero. That is, if is a subset of some set , one has \mathbf_(x)=1 if x\i ...
of a subset of the domain, a concept in mathematics
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Indicator net, nets anchored at various depths to the sea bed around Allied naval bases during World War II intended to entangle U-boat traffic of the enemy
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Indicator of compromise, an artifact observed in computer forensics that indicates an intrusion
Other uses
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''Indicator'' (Deine Lakaien album), 2010
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''Indicator'' (Onward to Olympas album), 2012
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Indicator Island, in the Argentine Islands of Antarctica
* ''The Indicator'' (1819–1821), a weekly literary journal edited by
Leigh Hunt
* ''The Indicator'', a daily podcast produced by
Planet Money
''Planet Money'' is an American podcast and blog produced by NPR. Using "creative and entertaining" dialogue and narrative, ''Planet Money'' claims to be "The Economy Explained."
History
The podcast was created by Alex Blumberg and Adam Davids ...
* A synonym for the
turn signal of an automobile
{{disambiguation
