Meta- (from the Greek preposition μετά = "after", "beyond", "adjacent", "self", also commonly used in the form μετα- as a prefix in Greek, with variants μετ- before vowels and μεθ- "meth-" before aspirated vowels), is a prefix used in English (and other Greek-owing languages) to indicate a concept which is an abstraction from another concept, used to complete or add to the latter.

In epistemology, the prefix meta- is used to mean about (its own category). For example, metadata are data about data (who has produced them, when, what format the data are in and so on). Also, metamemory in psychology means an individual's knowledge about whether or not they would remember something if they concentrated on recalling it. Furthermore, metaemotion in psychology means an individual's emotion about his/her own basic emotion, or somebody else's basic emotion.

Another, slightly different interpretation of this term is "about" but not "on" (exactly its own category). For example, in linguistics a grammar is considered as being expressed in a metalanguage, or a sort of language for describing another language (and not itself).

Any subject can be said to have a meta-theory which is the theoretical consideration of its meta-properties, such as its foundations, methods, form and utility.

In Greek, the prefix meta- is generally less esoteric than in English; Greek meta- is equivalent to the Latin words post- or ad-. The use of the prefix in this sense occurs occasionally in scientific English terms derived from Greek. For example: the term Metatheria (the name for the clade of marsupial mammals) uses the prefix meta- merely in the sense that the Metatheria occur on the tree of life adjacent to the Theria (the placental mammals).

Meta is also gaining currency as an adjective, as well as a prefix, as in the work of Douglas Hofstadter (see below).

Read more about Meta:  Etymology, Quine and Hofstadter

Other articles related to "meta":

Semantic Parameterization - Introduction With Example
... and 2) those assertions that are inferred by the (human) modeler, called the meta-model ... Next, the modeler identifies concepts from the dictionary to compose the meta-model ... The grounding and meta-model derived from UNLS1.0 Grounding Meta-model Customer Share isAccessCodeOf(, ) Someone Provider Activity(p5) hasSubject(, ) hasAction ...
Meta, Campania
... Meta or Meta di Sorrento is a comune (municipality) in the Province of Naples in the Italian region Campania, located about 25 km southeast of Naples ... Meta borders the municipalities of Piano di Sorrento and Vico Equense ...
Meta Incognita Peninsula
... The Meta Incognita Peninsula is located on southern Baffin Island in the Canadian territory of Nunavut ... The Queen named it Meta Incognita, Latin for "the unknown limits." Frobisher's 1578 voyage was originally planned to establish a settlement here ...
La Macarena, Meta - Unidentified Corpses and Allegations of A Mass Grave
... In August 2010, Tribune Magazine reported that an international delegation made up of politicians, lawyers and labor unionists led by the UK-based Justice for Colombia NGO visited the site to take part in a public hearing ... According to Justice for Colombia, locals provided reports and evidence of extrajudicial killings by the Colombian military ...
List Of Medabots Characters - Characters of Medabots Spirit (Medabot Damashii) - Kam's Rogue Meta-Fighters - Suzie/Ambiguous 2
... Suzie's a meta-fighter that Kam found that the nature of a rogue meta-fighter with her ruthlessness to her defeated opponents ... when she robattles she's as dirty as the other rogue meta-fighters.She has a bratty disposition and is prone to crying hen she loses or doesn't get her way ...