What is one hundredth of a minute called?

Answer 1

Minutes and hours are currently not measured using a metric system. Time is measured using the decimal system, whereby an hour is 60 minutes, and a minute is 60 seconds.

In most proposed metric time systems the smallest usable measure of time is still called a 'second' with smaller portions called milliseconds and kiloseconds. 10 seconds would be called a decasecond, and 100 seconds called a hectosecond.