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hardground
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English
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Etymology
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hard
+
ground
Noun
edit
hardground
(
plural
hardgrounds
)
English
Wikipedia
has an article on:
hardground
Wikipedia
(
geology
)
A
lithified
seafloor
.
Ancient
hardgrounds
are found in limestone sequences and distinguished from later-lithified sediments by evidence of exposure to normal marine waters.
(
mining
)
A hard
stratum
of
rock
other than
coal
.
Categories
:
English compound terms
English lemmas
English nouns
English countable nouns
en:Geology
en:Mining