HyperDic: caesium_clock

English > 1 sense of the expression *caesium clock*:
NOUN	artifact	caesium clock	an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field

English > *caesium clock*: 1 sense > noun 1, artifact
Meaning	An atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field.
Broader	atomic clock	A timepiece that derives its time scale from the vibration of atoms or molecules