Roget, Peter Mark (rōzhāˈ) [key], 1779–1869, English physician and lexicographer. For 50 years while he practiced medicine and was secretary of the Royal Society (1827–49), Roget prepared his Thesaurus of English Words and Phrases (1852). In successive editions supervised by him, his son, his grandson, and others, it has remained a standard reference book.
See biographies by D. L. Emblen (1970) and J. Kendall (2008).
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