Dorland's Medical Dictionary
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Dorland's Medical Dictionary was first published in 1890 as the American Illustrated Medical Dictionary including 770 pages. A pocket edition, called the American Pocket Medical Dictionary, was first published in 1898 consisting of just over 500 pages.
With the death of the editor William Alexander Newman Dorland, AM, MD. in 1956, the dictionaries were retitled to incorporate his name, which was how they had generally come to be known. The illustrated dictionary has grown to 2200 pages for the 30th edition.
The most recent version, the 30th edition, is available in electronic format.