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Watch glass
Meaning
Noun
●
In Chemistry:
An
item
of
glass
laboratory
equipment
consisting of
a
simple
,
slightly
concave
circle
of
glass
. It is a general
utility
item
, used to
hold
small
samples
, to
evaporate
liquids
, to
cover
a
beaker
, and so on.
●
The
glass
covering
of the
face
of a watch.
●
A sandglass.
Sourced from
Wiktionary
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