currency
US /ˈkɝː.ən.si/
UK /ˈkɝː.ən.si/
1.
a system of money in general use in a particular country
:
•
The local currency is the Euro.
•
What is the currency of Japan?
2.
the fact or quality of being generally accepted or in use
:
•
The idea gained currency among young people.
•
The theory has lost its currency in modern science.