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Metric or metrical may refer to: *
Metric system The metric system is a system of measurement that succeeded the Decimal, decimalised system based on the metre that had been introduced in French Revolution, France in the 1790s. The historical development of these systems culminated in the d ...
, an internationally adopted decimal system of measurement * An adjective indicating relation to
measurement Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events. In other words, measurement is a process of determining how large or small a physical quantity is as compared ...
in general, or a noun describing a specific type of measurement


Mathematics

In mathematics, metric may refer to one of two related, but distinct concepts: * A function which measures distance between two points in a
metric space In mathematics, a metric space is a set together with a notion of ''distance'' between its elements, usually called points. The distance is measured by a function called a metric or distance function. Metric spaces are the most general settin ...
* A
metric tensor In the mathematical field of differential geometry, a metric tensor (or simply metric) is an additional structure on a manifold (such as a surface) that allows defining distances and angles, just as the inner product on a Euclidean space allows ...
, in differential geometry, which allows defining lengths of curves, angles, and distances in a manifold


Natural sciences

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Metric tensor (general relativity) In general relativity, the metric tensor (in this context often abbreviated to simply the metric) is the fundamental object of study. It may loosely be thought of as a generalization of the gravitational potential of Newtonian gravitation. The me ...
, the fundamental object of study in general relativity, similar to the gravitational field in Newtonian physics * Senses related to measurement: **
Metric system The metric system is a system of measurement that succeeded the Decimal, decimalised system based on the metre that had been introduced in French Revolution, France in the 1790s. The historical development of these systems culminated in the d ...
, an internationally adopted decimal system of measurement **
Metric units Metric units are units based on the metre, gram or second and decimal (power of ten) multiples or sub-multiples of these. The most widely used examples are the units of the International System of Units (SI). By extension they include units of el ...
, units related to a metric system **
International System of Units The International System of Units, known by the international abbreviation SI in all languages and sometimes pleonastically as the SI system, is the modern form of the metric system and the world's most widely used system of measurement. E ...
, or ''Système International'' (SI), the most widely used metric system *
METRIC Metric or metrical may refer to: * Metric system, an internationally adopted decimal system of measurement * An adjective indicating relation to measurement in general, or a noun describing a specific type of measurement Mathematics In mathema ...
, a model that uses Landsat satellite data to compute and map evapotranspiration (ET) in climatology/meteorology


Engineering and business

The word metric is often used to mean a
descriptive statistic A descriptive statistic (in the count noun sense) is a summary statistic that quantitatively describes or summarizes features from a collection of information, while descriptive statistics (in the mass noun sense) is the process of using and an ...
,
indicator Indicator may refer to: Biology * Environmental indicator of environmental health (pressures, conditions and responses) * Ecological indicator of ecosystem health (ecological processes) * Health indicator, which is used to describe the health o ...
, or
figure of merit A figure of merit is a quantity used to characterize the performance of a device, system or method, relative to its alternatives. Examples *Clock rate of a CPU * Calories per serving *Contrast ratio of an LCD *Frequency response of a speaker * ...
used to describe or measure something quantitatively, including: *
Performance indicator A performance indicator or key performance indicator (KPI) is a type of performance measurement. KPIs evaluate the success of an organization or of a particular activity (such as projects, programs, products and other initiatives) in which it en ...
, a measure of an organization's activities and performance *
Metrics (networking) Router metrics are configuration values used by a router to make routing decisions. A ''metric'' is typically one of many fields in a routing table. Router metrics help the router choose the best route among multiple feasible routes to a desti ...
, the properties of a communication path used by a router to make routing decisions *
Software metric In software engineering and development, a software metric is a standard of measure of a degree to which a software system or process possesses some property. Even if a metric is not a measurement (metrics are functions, while measurements are t ...
, a measure of some property of a piece of software or its specifications *
Reuse metrics In software engineering, many reuse metrics and models are metrics used to measure code reuse and reusability. A metric is a quantitative indicator of an attribute of a thing. A model specifies relationships among metrics. Reuse models and metrics ...
, a quantitative indicator of an attribute for software reuse and reusability *
Search engine optimization metrics A number of metrics are available to marketers interested in search engine optimization. Search engines and software creating such metrics all use their own crawled data to derive at a numeric conclusion on a website's organic search potential. Si ...
, indicators of a website's organic search potential


Music

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Alex Metric Alex Metric (born Alex Drury, 1981) is a Grammy Award-winning British musician, DJ and producer. Biography Alex Metric has released numerous EPs as a solo artist, and singles as a member of Metroplane and Kuu. He has remixed artists such as D ...
(born 1984), British musician, DJ and producer *
Metric (band) Metric is a Canadian rock band founded in 1998 in Toronto, Ontario. The band consists of Emily Haines (lead vocals, synthesizers, guitar, tambourine, harmonica, piano), James Shaw (guitar, synthesizers, theremin, backing vocals), Joshua Winstea ...
, a Canadian rock band founded in Toronto, Ontario


Other uses

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Metre (poetry) In poetry, metre ( Commonwealth spelling) or meter ( American spelling; see spelling differences) is the basic rhythmic structure of a verse or lines in verse. Many traditional verse forms prescribe a specific verse metre, or a certain set o ...
, the rhythmic structure of poetry * Font metrics, properties describing the overall shape of a font


See also

*
Meter (disambiguation) Meter or metre is a unit of measurement of length in the metric system. Meter or metre may also refer to : * Meter, a measuring instrument ** Utility meter (disambiguation), such as gas, electricity, etc **Parking meter * Meter or Cybele, an Anat ...
*
Metrecal Metrecal was a brand of low-calorie, powdered diet foods (to be mixed with water as a beverage) "containing the essential nutrients of protein, carbohydrate, fat, vitamins and minerals" introduced in the early 1960s by the Mead Johnson company, with ...
, a diet drink introduced in the 1960s *
Metric conversion (disambiguation) Metric conversion may refer to: * Converting a non-metric quantity to the metric equivalent; see "Conversion of units" * Conversion of a country from non-metric units to metric units; see "Metrication Metrication or metrification is the act or ...
*
Metric dimension (disambiguation) In mathematics, metric dimension may refer to: * Metric dimension (graph theory), the minimum number of vertices of an undirected graph ''G'' in a subset ''S'' of ''G'' such that all other vertices are uniquely determined by their distances to th ...
*
Metric gauge (disambiguation) Metric gauge may refer to: * Metre gauge, a rail gauge * A instrument gauge that reads in metric measurements * A wire gauge Wire gauge is a measurement of wire diameter. This determines the amount of electric current the wire can safely car ...
* {{disambiguation