willem de sitter

Noun

  • (n.) Sitter, Willem de Sitter (Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)).
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APAWordNet. (2010). Willem de Sitter. Retrieved May 18, 2013, from http://smartdefine.org/willem_de_sitter/definitions/1320879
ChicagoWordNet. 2010. "Willem de Sitter" http://smartdefine.org/willem_de_sitter/definitions/1320879 (accessed May 18, 2013).
HarvardWordNet 2010, Willem de Sitter, Smart Define, viewed 18 May, 2013, <http://smartdefine.org/willem_de_sitter/definitions/1320879>.
MLAWordNet. "Willem de Sitter" 23 October 2010. Web. 18 May 2013. <http://smartdefine.org/willem_de_sitter/definitions/1320879>