Invocation | Mean of invocation in English Dictionary

/ˌɪnvəˈkeɪʃən/

• Noun
• the act of mentioning or referring to someone or something in support of your ideas
1. his repeated invocations of the ancient philosophers
2. justifying his position by invocation of the past
• the act of asking for help or support especially from a god
1. The poem begins with an invocation of/to the Muses.
2. by invocation of God
• a prayer for blessing or guidance at the beginning of a service, ceremony, etc.
1. They began the meeting with an invocation.