There are 18 words that end with 'xide'.
| oxide | dioxide |
| epoxide | alkoxide |
| monoxide | peroxide |
| suboxide | trioxide |
| hydroxide | methoxide |
| pentoxide | phenoxide |
| protoxide | sulfoxide |
| tetroxide | superoxide |
| endoperoxide | hydroperoxide |
Note: These 18 words that end with 'xide' are found from the USA & Canada version of the tournament Scrabble word list.