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understratum
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English
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Etymology
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under-
+
stratum
Noun
edit
understratum
(
plural
understratums
or
understrata
)
The
layer
, or
stratum
, of
earth
on which the
soil
rests; the
subsoil
.
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English terms prefixed with under-
English lemmas
English nouns
English countable nouns
English nouns with irregular plurals