Pronunciation: (in"tOO-ish'un, -tyOO-),[key] —n. 1. direct perception of truth, fact, etc., independent of any reasoning process; immediate apprehension.
2. a fact, truth, etc., perceived in this way.
3. a keen and quick insight.
4. the quality or ability of having such direct perception or quick insight.
5. Philos. a. an immediate cognition of an object not inferred or determined by a previous cognition of the same object.
b. any object or truth so discerned.
c. pure, untaught, noninferential knowledge.
6. Ling.the ability of the native speaker to make linguistic judgments, as of the grammaticality, ambiguity, equivalence, or nonequivalence of sentences, deriving from the speaker's native-language competence.