1. (noun) a unit for measuring time periods

• unit of time

1. (noun) a unit for measuring time periods

• 15 minutes
• quarter-hour
• 24-hour interval
• day
• mean solar day
• solar day
• twenty-four hour period
• twenty-four hours
• 30 minutes
• half-hour
• 60 minutes
• hour
• hr
• attosecond
• bell
• ship's bell
• day
• sidereal day
• ephemeris time
• tdt
• terrestrial dynamical time
• terrestrial time
• tt
• femtosecond
• mean solar time
• mean time
• microsecond
• millisecond
• msec
• min
• minute
• month
• nanosecond
• night
• picosecond
• quarter
• s
• sec
• second

1. (noun) a unit for measuring time periods

• amount
• measure
• quantity