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Atomic clock
Meaning
Noun
●
In Clocks:
An
extremely
accurate
reference
clock
whose
operation
is based on an
atomic
process,
typically
the
frequency
of
electromagnetic radiation
associated with a
specified
energy-level
transition
in an
element
such as cesium.
●
In Clocks:
A
radio
clock.
Sourced from
Wiktionary
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