1 ผลลัพธ์ สำหรับ understratum
หรือค้นหา: -understratum-, *understratum*

Collaborative International Dictionary (GCIDE)
Understratum

n.; pl. L. Understrata E. Understratums The layer, or stratum, of earth on which the mold, or soil, rests; subsoil. [ 1913 Webster ]


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