[ ɪn'vəʊk ]
■ verb
1》 call on (a deity or spirit) in prayer or as a witness.
↘summon (a spirit) by charms or incantation.
2》 appeal to as an authority or in support of an argument.
↘call earnestly for.
3》 Computing cause (a procedure) to be carried out.
Derivatives
~r noun
Origin
C15 (earlier (ME) as invocation ): from Fr. invoquer , from L. invocare .