1. the act of invoking or calling upon a deity, spirit, etc., for aid, protection, inspiration, or the like; supplication. 2. any petitioning or supplication for help or aid. 3. a form of prayer invoking God's presence, said at the beginning of a public or religious ceremony.
INVOCATION meaning: 1 : the act of mentioning or referring to someone or something in support of your ideas the act of invoking something + of; 2 : the act of asking for help or support especially from a god