3i Infotech Placement: Sample Questions 298 - 298 of 1245

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Question 298


Describe in Detail


What is extension and intension?


  • In treat the use of signs, for example, linguistics, logic, mathematics, semantics, and semiotics, the extension of a concept, idea, or sign consists of the things to which it applies, in contrast with its comprehension or intension, which consists very roughly of the ideas, properties, or corresponding signs that are implied or suggested by the concept in question.
  • In philosophical semantics or the philosophy of language, the extension of a concept or expression is the set of things it extends to, or applies to, if it is the sort of concept or expression that a single object by itself can satisfy. (Concepts and expressions of this sort are monadic or “one-place” concepts and expressions.)
  • In the context of formal logic, the extension of a whole statement, as opposed to a word or phrase, is sometimes defined (arguably by convention) as its logical value.
  • So, in that view, the extension of “Lassie is famous” is the logical value true, since Lassie is famous.


  • In linguistics, logic, philosophy, and other fields, an intension is any property or quality or state of affairs connoted by a word, phrase or other symbol.
  • In case of a word, it is often implied by its definition.
  • The term may also refer to the complete set of meanings or properties that are implied by a concept, although the term comprehension is technically more correct for this.
  • Intension is generally discussed with regard to extension (or denotation) . For example, the intension of a car is the all-inclusive concept of a car, including, for example, mile-long cars made of chocolate that may not actually exist.
  • But the extension of a car is all actual instances of cars (past, present, and future) , which will amount to millions or billions of cars, but probably does not include any mile-long cars made of chocolate.

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