person-hour

noun
per·​son-hour | \ ˈpər-sᵊn-ˌau̇(-ə)r How to pronounce person-hour (audio) \

Definition of person-hour

: a unit of one hour's work by one person

First Known Use of person-hour

1975, in the meaning defined above

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The first known use of person-hour was in 1975

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