|Origin:||invoquer, from Latin invocare, from vocare 'to call'|
if you invoke a law, rule etc, you say that you are doing something because the law allows or forces you to:
The UN threatened to invoke economic sanctions if the talks were broken off.
to make a particular idea, image, or feeling appear in people's minds by describing an event or situation, or by talking about a person [↪ evoke]:
a painting that invokes images of the Rocky Mountains
During his speech, he invoked the memory of Harry Truman.
to use a law, principle, or theory to support your views
to operate a computer program
to ask for help from someone more powerful than you, especially a god:
St. Genevieve is often invoked against plagues.
to make spirits appear by using magic:
invoking the spirits of their ancestors