Invocation :: Invocation (n.) The act or form of calling for the assistance or presence of some superior being; earnest and solemn entreaty; esp., prayer offered to a divine being..
Invocation :: Invocation (n.) A call or summons; especially, a judicial call, demand, or order; as, the invocation of papers or evidence into court..
Invocatory :: Invocatory (a.) Making or containing invocation; invoking.