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Solvay process
solve
solvent
solvent extraction
solvent misuse
solvolysis
Som.
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soma (1)
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solum
so·lum [ sṓləm ]


noun 
Definition:
 
upper layers of soil profile: the upper layer of a soil profile where the formation of new soil takes place and where most plant roots and soil animals are found
[Mid-19th century. < Latin, "ground, foundation"]
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