atomic_clock (HyperDic hyper-dictionary) (English)

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English 1 sense of the expression *atomic clock*:
NOUN	artifact	atomic clock	a timepiece that derives its time scale from the vibration of atoms or molecules

Englishatomic clock: 1 sense noun 1, artifact
Meaning	A timepiece that derives its time scale from the vibration of atoms or molecules.
Narrower	ammonia clock	An atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule
Narrower	caesium clock	An atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field
Broader	timepiece, timekeeper, horologe	A measuring ... / measuring instrument or device for keeping time
Spanish	reloj atómico
Catalan	rellotge atòmic

HyperDicEnglishATOMIC C ... atomic clock