Definition of caesium clock in English:

caesium clock

Line breaks: cae|sium clock

Entry from British & World English dictionary

noun

An atomic clock that uses the vibrations of caesium atoms as a time standard.

Definition of caesium clock in:

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Word of the day flagitious
Pronunciation: fləˈdʒɪʃəs
adjective
(of a person or their actions) criminal; villainous