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English definition of “preface”

preface

noun [C]  /ˈpref·əs/ us  
literature something that comes before and introduces a more important thing, esp. an introduction at the beginning of a book that explains its aims: an author’s preface
preface
verb [T]  /ˈpref·əs/ us  
He didn’t preface the bad news with "I don’t know how to tell you this, but."
(Definition of preface from the Cambridge Academic Content Dictionary © Cambridge University Press)
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