The story of dictionaries

Oxford Dictionaries are trusted around the world as the definitive source on language and the first point of reference. Drawing on the largest language research programme in the world – and over 150 years of dictionary-making experience – Oxford offers reliable language resources in print, online, and via mobile. 
We pride ourselves on the scope and scale of our language research programme. Our dictionaries and thesauruses are trusted the world over because we invest the time and resources to track the language and ensure that we include the latest new words and phrases and the most up-to-date definitions, as well as information on grammar, usage, and regional variation.