Ringword puzzle #78 - solution

1: Iron, copper, or titanium = metal
4: Like Sasha or Xander = alex
7: Prefix for -phone and -phagous = xylo
9: Prefix for government, anesthesia, and area network = local
12: Dumbledore's first name = albus
15: Soviet Union, acronym = ussr
18: Nucleus and coda = rime

Full solution: metalexylocalbussrime