Looking for the meaning or definition of the word interdict? Here's what it means.
Noun
A papal decree prohibiting the administration of the sacraments from a political entity under the power of a single person (e.g., a king or an oligarchy with similar powers). Extreme unction/Anointing of the Sick is excepted.
(transitive, Roman Catholicism) To exclude (someone or somewhere) from participation in church services; to place under a religious interdict. [from 13th c.]
(transitive) To forbid (an action or thing) by formal or legal sanction. [from 16th c.]
(transitive) To forbid (someone) from doing something. [from 16th c.]
(transitive, US, military) To impede (an enemy); to interrupt or destroy (enemy communications, supply lines etc). [from 20th c.]