The expression “coffee break” was first attested in 1952 in glossy magazine advertisements by the Pan-American Coffee Bureau.
hertz, Hz, cycle per second, cycles, second, cps, cycle
(noun) the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz)
Source: WordNet® 3.1
2 April 2025
(adjective) secret or hidden; not openly practiced or engaged in or shown or avowed; “covert actions by the CIA”; “covert funding for the rebels”
The expression “coffee break” was first attested in 1952 in glossy magazine advertisements by the Pan-American Coffee Bureau.