How To Spell invocation?

Correct spelling: invocation

What is the definition of invocation?

  1. the act of appealing for help

Google Ngram Viewer results for invocation:

This graph shows how "invocation" have occurred between 1800 and 2008 in a corpus of English books.

What are the usage examples for invocation?

  1. But the result was strangely different from that which followed his invocation both of the previous and the following plague, when we may believe that as he raised his hand, the hail- storm burst in thunder, and the curtain fell upon the sky. – The Expositor's Bible: The Book of Exodus by G. A. Chadwick