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Substratum

usgb/ˈsʌbstreɪtəm/Volume
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Physical layerPlay
Refers to real, tangible layers, like rock or sediment, not abstract ones. SlideArchaeologists studied the substratum to understand the site's history.
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Technical contextsPlay
Mostly used in specialized fields such as geology or construction. SlideThe engineer analyzed the substratum for the new highway.
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Supportive naturePlay
Emphasizes the supporting role of a layer beneath another. SlideThe greenhouse was constructed on a strong substratum.
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