What is the meaning of rigour?

noun

13
 
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APAWordNet. (2010). rigour. Retrieved July 20, 2018, from http://smartdefine.org/rigour/definitions/1306977
ChicagoWordNet. 2010. "rigour" http://smartdefine.org/rigour/definitions/1306977 (accessed July 20, 2018).
HarvardWordNet 2010, rigour, Smart Define, viewed 20 July, 2018, <http://smartdefine.org/rigour/definitions/1306977>.
MLAWordNet. "rigour" 23 October 2010. Web. 20 July 2018. <http://smartdefine.org/rigour/definitions/1306977>