Definition of coinage noun from the Oxford Advanced American Dictionary
coinage
noun
/ˈkɔɪnɪdʒ/
1[uncountable]the coins used in a particular place or at a particular time; coins of a particular typeRoman coinagegold/silver/bronze coinage2[uncountable]the system of money used in a particular country3[countable, uncountable]a word or phrase that has been invented recently; the process of inventing a word or phrasenew coinages