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Dropstone
Meaning
Noun
●
In Geology:
An
isolated
fragment
of
rock
found within a
sedimentary rock
(that had
fallen
,
rather than
being
carried
along).
●
An
isolated
rock
that is
geologically
distinct
from the
surroundings
,
indicating
that it was
carried
from a
distant
area and then
dropped in
place (by a
melting
glacier
); an erratic.
Sourced from
Wiktionary
Origin
dropstone
English
drop
English
dropa
Old English (ca. 450-1100)
dropian
Old English (ca. 450-1100)
stone
English
stan
Middle English (1100-1500)
stan
Old English (ca. 450-1100)
Sourced from
Etym
Synonyms
Erratic
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