Ref. that took 70 years to complete

• Lexicon with many citations: Abbr
• Noted ref. book
• It ends with "zyzzyva," in brief
• Massive Brit. reference
• Ref. with about 22,000 pages
• It has hundreds of thousands of meanings: Abbr.
• Certain ref. work
• Ref. work whose Compact Edition is sold with a magnifying glass
• Big reference bk

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."