are letters that make 'Ru'
are words within 'Ru'
rue, rug, RUF, rum, rub, run, rut, Rus
are words created by adding a letter to 'Ru'
1 possible definitions for 'Ru'
Under this definition, ru is a noun and has the following properties:
ruthenium, atomic number 44
have the same meaning as 'Ru'
'Ru' can be a type of metallic element, metal.