An uppercase M in the metric system stands for the prefix mega, meaning one million. For instance 1Mg is one megagram, or one million grams.
Ms would mean one megasecond ( s represents seconds), or one million seconds.
Sometimes an uppercase M is mistakenly used for metre, which should be represented by a lowercase m.
does international system of units mean a version of the metric system used by modern scientists
Nothing. It is an abbreviation for gallon, but the gallon is NOT part of the metric system.
1 gram is in the metric system. do you mean 1ounce?
millionth
The units of mass in the metric system are grams (g), kilograms (kg), and metric tons (t).
does international system of units mean a version of the metric system used by modern scientists
Nothing. It is an abbreviation for gallon, but the gallon is NOT part of the metric system.
1 gram is in the metric system. do you mean 1ounce?
it means the numbers in the metric system
It is a measurement of volume using units from the metric system.
metres per second, ms-1, or kilometres per hour.
millionth
The units of mass in the metric system are grams (g), kilograms (kg), and metric tons (t).
It means multiplying with constants from a non metric system (such as length using yards, feet, inches) to a metric system (using meters)
If, by 'metric system', you mean the 'SI system', then there is no base unit for volume. The unit for volume is called a 'derived unit', and it is the cubic metre (m3).
I don't know exactly what you mean; but neither ounces nor gallons are part of the metric system. Look at the Wikipedia article on "SI" to get information about the current, official, version of the metric system.
Metric system