Ref. with about 600,000 word-forms

• British ref. set
• 21,728-pg. work that is constantly updated
• Venerable ref. book
• Clickbait site, as of Sep. 2016
• Classic work originally in 10 vols
• Ref. work whose 2018 Word of the Year is "toxic"
• Ref. last published in 1989
• Multi-vol. Brit. ref
• Reference book: Abbr

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
initialism (acronym) of Oxford English Dictionary , attested from 1898, according to the "Oxford English Dictionary."