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noun [plural]
1 : the time during the day when people work in an office
Our office hours are 8:30 to 4:00 Monday through Friday.
2 US : the time during the day when a teacher is available to meet with students in his or her office
She has office hours Monday and Wednesday mornings from 9:00 to 11:00.
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the time when people in offices are normally working
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Our telephone lines are open during normal office hours.
Useful english dictionary. 2012.