What is the meaning of Substratum?

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(n.) That which is laid or spread under; that which underlies something, as a layer of earth lying under another; specifically (Agric.), the subsoil.
(n.) The permanent subject of qualities or cause of phenomena; substance.

Webster's Revised Unabridged Dictionary

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APA	Webster's. (2011). substratum. Retrieved September 23, 2026, from http://smartdefine.org/substratum/definitions/2067956
Chicago	Webster's. 2011. "substratum" http://smartdefine.org/substratum/definitions/2067956 (accessed September 23, 2026).
Harvard	Webster's 2011, substratum, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/substratum/definitions/2067956>.
MLA	Webster's. "substratum" 28 May 2011. Web. 23 September 2026. <http://smartdefine.org/substratum/definitions/2067956>

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