Peter Mark Roget

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Peter Mark Roget.
Peter Mark Roget c. 1865.

Peter Mark Roget (born January 18, 1779 in London , † September 12, 1869 in West Malvern, Worcestershire ) was an English doctor and lexicographer .

From 1834 to 1837 he was Fullerian Professor of Physiology at the Royal Institution.

Roget's thesaurus

On April 29, 1852, his work Thesaurus of English Words and Phrases was published, which quickly gained importance as Roget's Thesaurus for the English language. The first edition was 15,000 words. The vocabulary was divided into six classes:

  • Abstract labels
  • room
  • matter
  • intellect
  • will
  • feeling


Roget invented the log-log slide rule in 1815 . In addition, around 1835 he developed the Rogetsche spiral , a form of self- breaking contact , named after him .


  • Animal and Vegetable Physiology considered with reference to Natural Theology - one of the Bridgewater Treatises with an explanation of an optical illusion when looking at the spokes of a spinning wheel through vertical openings.


After Roget are in Antarctica, the Cape Roget in Victoria Land and Roget Rocks , cliffs off the coast of the Antarctic Peninsula , named.

Web links

Commons : Peter Mark Roget  - Collection of images, videos and audio files

Individual evidence

  1. Altius Directory: Thesaurus-Day 2011 (English), accessed on April 28, 2011
  2. Roget's Spiral. Retrieved October 24, 2013 .
  3. In: Annalen der Physik und Chemie, 1825, Volume 5, pp. 93-104