o'clock

Definition

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, i.e., at the hour.

Etymology

Shortened form of "of the clock", from Middle English of the clokke [from late 14th c.].

Example Sentences

• "We are expected to be there at six o'clock in the morning!"
• "It is two o'clock."
• "What o'clock is it?"

Related Words