We found 8 dictionaries that define the word penninite:

General (7 matching dictionaries)

1. penninite: Merriam-Webster
2. penninite: Collins English Dictionary
3. penninite: Wordnik
4. penninite: Infoplease Dictionary
5. penninite: Dictionary.com
6. penninite: TheFreeDictionary.com
7. penninite: Wiktionary

Computing (1 matching dictionary)

8. penninite: Encyclopedia

Definitions from Wiktionary (penninite) ▸ noun:  (mineralogy) A double silicate of aluminium and magnesium. ▸ Words similar to penninite ▸ Usage examples for penninite ▸ Idioms related to penninite ▸ Wikipedia articles (New!) ▸ Popular adjectives describing penninite ▸ Words that often appear near penninite ▸ Rhymes of penninite ▸ Invented words related to penninite