If you are looking for an answer to the question What is Artificial Intelligence? and you only have a minute, then here's the definition the Association for the Advancement of Artificial Intelligence offers on its home page: "the scientific understanding of the mechanisms underlying thought and intelligent behavior and their embodiment in machines."
However, if you are fortunate enough to have more than a minute, then please get ready to embark upon an exciting journey exploring AI (but beware, it could last a lifetime) …
Chomsky, Carol | Laughery, Kenneth
Men typically communicate with computers in a variety of artificial,stylized, unambiguous languages that are better adapted to the machinethan to the man. For convenience and speed, many future computercenteredsystems will require men to communicate with computers innatural language. The business executive, the military commander, and thescientist need to ask questions of the computer in ordinary English, andto have the computer answer the questions directly. Baseball is a first steptoward this goal.Proc. Western Joint Computer Conference 19:555-570.