are letters that make 'Zr'
are words within 'Zr'
1 possible definitions for 'Zr'
Under this definition, zr is a noun and has the following properties:
zirconium, atomic number 40
have the same meaning as 'Zr'
'Zr' can be a type of metallic element, metal.
'Zr' can be a substance of baddeleyite, zircon, zirconium silicate.