The Oxford English Dictionary (OED), published by the Oxford University Press, is the self-styled premier dictionary of the English language. Two fully bound print editions of the OED have been published under its current name, in 1928 and 1989. The first edition was published in twelve volumes (plus later supplements), and the second edition in twenty volumes. As of 24 March 2011 (2011 -03-24)^[update], the editors had completed the third edition from M to Ryvita. With descriptions for approximately 600,000 words, the Oxford English Dictionary is the world's most comprehensive single-language print dictionary according to the Guinness Book of World Records.^{[citation needed]}