transitive verb invoked -·voked′, invoking -·vok′·ing

1. to call on (God, a god, a saint, the Muses, etc.) for blessing, help, inspiration, support, etc.
2. to resort to or put into use (a law, ruling, penalty, etc.) as pertinent to invoke an article of the U.N. Charter
3. to call forth; cause
4. to summon (evil spirits) by incantation; conjure
5. to ask solemnly for; beg for; implore to invoke aid

Etymology: ME invoken < MFr invoquer < L invocare < in-, in, on + vocare, to call < vox, voice