what is o in 7 o clock?

Answer 1

OF

Answer 2

7 of the clock

Answer 3

"o'clock" is short for "of the clock" meaning "according to the clock". The fuller form of the expression is found as early as the late 14th century (in Chaucer).
http://www.randomhouse.com/wotd/index.pp...

But we can perhaps go a bit further, to the origins of the mechanical clock itself and the very word "clock". "Clock" comes from Latin 'cloca' meaning "BELL". It was the term applied to the newer devices in use for measuring time in the thirteenth century. As the word itself suggests, the key feature of these clocks is the bell that chimed the hours In fact, these clocks, often set out in public in a tower to make it possible to notify everyone, did not necessarily have hands.

The key thing, then, was notifying people of the HOUR of the day (not the minute, and not, at least at first, the quarter or half hour either). This practice of marking/announcing the hours is echoed by the watchman's call "nine o'clock and all is well." Thus it is scarcely surprising that this way of expressing the time did not (and still does not, except in certain highly formal uses) state anything BUT the HOUR.

Answer 4

It's 7 o' clock, with the ' in the place of "of the".

Answer 5

it means 7 on the clock and plus it would sound weird if it was just 7 clock

Answer 6

O' stands for "of" : the time is 7 am or pm, as per the clock!

Answer 7

You're missing the apostrophe there in " 7 o'clock. " It is a contaction for " 7 of the clock. "

Answer 8

7am or 7pm with no minutes expired.

Answer 9

what all those other ppl said