The Oxford English Dictionary (OED) is the historical English dictionary, providing an unsurpassed guide to the meaning, history, and usage of over 500,000 words and phrases across the English-speaking world.
As a comprehensive resource, the OED traces the evolution of words from their earliest known usage to the present day, offering detailed etymologies, pronunciations, and illustrative quotations drawn from a vast range of sources.
It serves researchers, scholars, and language enthusiasts in understanding the development of English vocabulary and semantic change over time, including regional variations and emerging terms.