Friday, December 19, 2014

O'clock

O'clock

In conjunction with a numeral, indicates the time within a twelve hour period (midnight to noon or noon to midnight), specifically the time when the hour hand of a clock points precisely to the symbol or marking corresponding to the designated numeral.
We are expected to be there at six o'clock in the morning!
It is two o'clock.
What o'clock is it?

Shortened form of “of the clock” or “on the clock”; that is, “according to the clock”.

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