Complex sentence: Implicature is a technical term in the pragmatics subfield of linguistics, coined by Paul Grice, which refers to what is "suggested" in an utterance, even though not expressed nor "strictly implied" (that is, entailed) by the utterance.
Split into simpler sentences: Implicature is a technical term in the pragmatics subfield of linguistics coined by Paul Grice. It refers to what is "suggested" in an utterance, even though not expressed nor "strictly implied" (that is, entailed) by the utterance.