from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The aspect of meaning that a speaker conveys, implies, or suggests without directly expressing. Although the utterance "Can you pass the salt?” is literally a request for information about one's ability to pass salt, the understood implicature is a request for salt.
- n. The process by which such a meaning is conveyed, implied, or suggested. In saying "Some dogs are mammals,” the speaker conveys by implicature that not all dogs are mammals.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An implied meaning that is not expressed directly.
Coined by Paul Grice. (Wiktionary)