What is the meaning of brighten?

verb

11
 
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APAWordNet. (2010). brighten. Retrieved August 17, 2018, from http://smartdefine.org/brighten/definitions/1261775
ChicagoWordNet. 2010. "brighten" http://smartdefine.org/brighten/definitions/1261775 (accessed August 17, 2018).
HarvardWordNet 2010, brighten, Smart Define, viewed 17 August, 2018, <http://smartdefine.org/brighten/definitions/1261775>.
MLAWordNet. "brighten" 23 October 2010. Web. 17 August 2018. <http://smartdefine.org/brighten/definitions/1261775>
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