What is the meaning of Quadruplane?

(n.) An aeroplane with four superposed main supporting surfaces.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). quadruplane. Retrieved September 25, 2026, from http://smartdefine.org/quadruplane/definitions/2051602
ChicagoWebster's. 2011. "quadruplane" http://smartdefine.org/quadruplane/definitions/2051602 (accessed September 25, 2026).
HarvardWebster's 2011, quadruplane, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/quadruplane/definitions/2051602>.
MLAWebster's. "quadruplane" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/quadruplane/definitions/2051602>