3 ms·"Mille" is French for 1,000. So MM = 1,000 * 1,000. M is also used in advertising, like CPM: Cost Per Mille.by idoh 6y ago"Mille" is French for 1,000. So MM = 1,000 * 1,000. M is also used in advertising, like CPM: Cost Per Mille.