A system of telling time where there are 100 seconds in a minute, 100 minutes in an hour, 10 hours in a day, which makes a 100 000 second day. This is different than the current Imperial system of telling time where there are 86 400 seconds in a day. There are currently no countries that use metric time, but that is likely to change.
person 1:Hey what time is it?
person 2:Oh, in metric time it's 5:94