Definition of Datum line
(Surv.)
the
horizontal
or
base
line
,
from
which
the
heights
of
points
are
reckoned
or
measured
,
as
in
the
plan
of
a
railway
,
etc
.
See also:
Datum
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database
datable
Dataria
Datary
Date
Date line
Date palm
Date plum
Date shell
dateable
dated
dateless
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Datiscin
Dative
Dative executor
Datively
Datolite
Datril
Datum
Datura
Daturine
Daub
daubed
Daubentonia
Daubentoniidae
Dauber
Daubery
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Daubreelite
Dauby
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Daughter cell
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