We found 11 dictionaries that define the word thorium dioxide:

General (7 matching dictionaries)

1. thorium dioxide: Merriam-Webster
2. thorium dioxide: American Heritage Dictionary of the English Language
3. thorium dioxide: Collins English Dictionary
4. thorium dioxide: Dictionary.com
5. Thorium dioxide: Wikipedia, the Free Encyclopedia
6. thorium dioxide: TheFreeDictionary.com
7. thorium dioxide: Wiktionary

Computing (1 matching dictionary)

8. thorium dioxide: Encyclopedia

Medicine (3 matching dictionaries)

9. thorium dioxide: Merriam-Webster Medical Dictionary
10. Medical Dictionary (No longer online)
11. online medical dictionary (No longer online)

Definitions from Wiktionary (thorium dioxide) ▸ noun:  (inorganic chemistry) An oxide compound of thorium with the chemical formula ThO₂. ▸ Words similar to thorium dioxide ▸ Usage examples for thorium dioxide ▸ Idioms related to thorium dioxide ▸ Wikipedia articles (New!) ▸ Words that often appear near thorium dioxide ▸ Rhymes of thorium dioxide ▸ Invented words related to thorium dioxide