E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
An official recognition of a person in the character of consul or commercial agent, authorising him to exercise his power. The word is Latin, and means, he may exercise [the function to which he has been appointed].
The Northern Patriotic League (Oporto) has decided to petition the Government to withdraw the Exequatur from the British Consul here.Reuters Telegram, Tuesday, Feb. 11th, 1890.