| Answer | Crossword Clue |
|---|---|
| protoxids | PROTOXID, an oxide (a compound of oxygen) |
| holmia | an oxide (a compound of oxygen) |
| protoxid | an oxide (a compound of oxygen) |
| holmias | HOLMIA, an oxide (a compound of oxygen) |
| oxid | oxide (a compound of oxygen) |
| oxides | OXIDE, a compound of oxygen |
| oxids | OXID, oxide (a compound of oxygen) |
| oxidic | pertaining to oxide (a compound of oxygen) |
| tetroxid | a type of oxide (a compound of oxygen) |
| tetroxids | TETROXID, a type of oxide (a compound of oxygen) |
| monoxides | MONOXIDE, a type of oxide (a compound of oxygen) |
