| Answer | Crossword Clue |
|---|---|
| superoxide | a peroxide, an oxide with the highest proportion of oxygen |
| superoxides | SUPEROXIDE, a peroxide, an oxide with the highest proportion of oxygen |
| peroxidic | relating to a peroxide, an oxide with the highest proportion of oxygen |
| suboxides | An oxide containing the lowest or an unusually small proportion of oxygen |
| suboxide | the oxide of an element that contains the smallest proportion of oxygen |
| sesquioxide | an oxide with three atoms of oxygen to two of the other constituent |
| sesquioxides | SESQUIOXIDE, an oxide with three atoms of oxygen to two of the other constituent |
