What does the o in oclock mean?

Answer 1

Answer

Ten o(f the) clock for example

Shortened form of "of the clock", that is, "according to the clock".

Answer

contraction of 'of the clock'.

1. In telling the time, used to indicate an exact hour of the day or
night, rather than some minutes past or before the hour

"He woke up at six o'clock in the morning."

2. In describing a position or direction of something, comparing it to
the positions of numbers on a clock face, with the observer at the
center of the clock. A 12 o'clock considered as straight up in vertical position.

"Look at the man sitting to your right, at three o'clock."

Answer 2

o(n the) clock

Answer 3

on