Letters that make Rio
o, r, i are letters that make 'Rio'
brio, trio, riot are words created by adding a letter to 'Rio'
1 possible definitions for 'Rio'
Under this definition, rio is a noun and has the following properties:
Rio de Janeiro has the same meaning as Rio
'Rio' can be considered an instance of city, metropolis, urban center.
Carioca is a member of Rio.
'Rio' can be a part of Brazil, Federative Republic of Brazil, Brasil.