THAT IS (TO SAY)


Meaning of THAT IS (TO SAY) in English

used to say what sth means or to give more information :

He's a local government administrator, that is to say a civil servant.

You'll find her very helpful—if she's not too busy, that is.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.