What is the meaning of Hardpan?

(n.) The hard substratum. Same as Hard pan, under Hard, a.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). hardpan. Retrieved September 20, 2026, from http://smartdefine.org/hardpan/definitions/2015033
ChicagoWebster's. 2011. "hardpan" http://smartdefine.org/hardpan/definitions/2015033 (accessed September 20, 2026).
HarvardWebster's 2011, hardpan, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/hardpan/definitions/2015033>.
MLAWebster's. "hardpan" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/hardpan/definitions/2015033>
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