What is the meaning of sd?

noun

13
 
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APAWordNet. (2010). Sd. Retrieved April 22, 2018, from http://smartdefine.org/sd/definitions/1309290
ChicagoWordNet. 2010. "Sd" http://smartdefine.org/sd/definitions/1309290 (accessed April 22, 2018).
HarvardWordNet 2010, Sd, Smart Define, viewed 22 April, 2018, <http://smartdefine.org/sd/definitions/1309290>.
MLAWordNet. "Sd" 23 October 2010. Web. 22 April 2018. <http://smartdefine.org/sd/definitions/1309290>
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