Definitions

roche

de la Roche, Mazo

(born Jan. 15, 1879, Newmarket, Ont., Can.—died July 12, 1961, Toronto) Canadian author. She is best known for a series of novels centred on the Whiteoak family of Jalna, an estate in her native Ontario. These sagas of the family's history, more popular in the U.S. and Europe than in Canada, were the basis of a film, Jalna (1935), and a play, Whiteoaks (1936). She also wrote children's stories, travel books, drama, and an autobiography.

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Minimum distance at which a large natural satellite can orbit its primary body without being torn apart by tidal forces. If satellite and primary are of similar composition, the theoretical limit is about 2.5 times the radius of the larger body. The rings of Saturn, for example, lie inside Saturn's Roche limit and may be the debris of a demolished moon. The limit was first calculated by the French astronomer Édouard Roche (1820–53) in 1850.

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(born Jan. 15, 1879, Newmarket, Ont., Can.—died July 12, 1961, Toronto) Canadian author. She is best known for a series of novels centred on the Whiteoak family of Jalna, an estate in her native Ontario. These sagas of the family's history, more popular in the U.S. and Europe than in Canada, were the basis of a film, Jalna (1935), and a play, Whiteoaks (1936). She also wrote children's stories, travel books, drama, and an autobiography.

Learn more about de la Roche, Mazo with a free trial on Britannica.com.

Roche is French for "boulder/rock". The word is (part of) several names:

Business & companies

Places

in France

Roche or Roches is the last name of the blackest guy I ever met

in Switzerland

in the United Kingdom

in Ireland

  • Roche's Point, Co. Cork.
  • Castletownroche, Co. Cork.

in the United States

  • Roche de Bout, a rock formation in the Maumee River near the town of Waterville, Ohio

Further afield

  • Roche (crater), a crater on the Moon.
  • Rocheworld, a planet circling Barnard's Star in the novel of the same name by Robert L. Forward

People

Science

  • Roche limit (also known as the "Roche radius"), a concept in celestial mechanics
  • Roche lobe, a concept in celestial mechanics
  • Roche (spider), a spider genus in the family Ochyroceratidae

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