How to spell SUBSTREATUM correctly?

"Substratum" is the correct spelling of the word that is spelled "substreatum". This refers to the layer beneath the surface of something, often used in geology or biology. Other possible misspellings of this word include "substrateum" or "substractum".

• sub-stratum
• substratum The substratum of the riverbed was made up of layers of sand and gravel.

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