Def: of or pertaining to the mental processes of perception, memory, judgment, and reasoning, as contrasted with emotional and volitional processes.
Def: The branch of philosophy that studies the nature of knowledge, its presuppositions and foundations, and its extent and validity.
def: To induct into office by a formal ceremony.
def: The sudden overthrow of a government by a usually small group of persons in or previously in positions of authority.
def: An accomplished, presumably irreversible deed or fact.