invocation

 
Pronunciation: /ˌɪnvə(ʊ)ˈkeɪʃ(ə)n/

noun

[mass noun]
  • the action of invoking someone or something: his invocation of the ancient powers of Callanish
  • [count noun] an incantation used to invoke a deity or the supernatural.
  • [count noun] (in the Christian Church) a form of words such as ‘In the name of the Father’ introducing a prayer, sermon, etc..

Derivatives

invocatory

Pronunciation: /ɪnˈvɒkət(ə)ri/
adjective

Origin:

late Middle English: via Old French from Latin invocatio(n-), from the verb invocare (see invoke)