|Compare metalanguage a language described by or being investigated by another language|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
in semantics and logic, the ordinary language used to talk about things or objects in the world-as contrasted with metalanguage, an artificial language used by linguists and others to analyze or describe the sentences or elements of object language itself. The concept was developed by such 20th-century logical positivists as Polish-American Alfred Tarski and German-American Rudolf Carnap.
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