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We found 12 dictionaries with English definitions that include the word mount st. helens:
Click on the first link on a line below to go directly to a page where "mount st. helens" is defined.

General (10 matching dictionaries)

1. St. Helens, Mount: Oxford Dictionaries [home, info]
2. Mount St. Helens: Vocabulary.com [home, info]
3. Mount St. Helens: Wiktionary [home, info]
4. mount st._helens, st. helens, mount: Dictionary.com [home, info]
5. Mount St. Helens: Wikipedia, the Free Encyclopedia [home, info]
6. Mount st. helens: Rhymezone [home, info]
7. mount st._helens: Free Dictionary [home, info]
8. mount st._helens: Mnemonic Dictionary [home, info]
9. Mount St. Helens: LookWAYup Translating Dictionary/Thesaurus [home, info]
10. Mount St. Helens: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

11. Mount St. Helens: Encyclopedia [home, info]

Slang (1 matching dictionary)

12. Mount St. Helens: Urban Dictionary [home, info]

Quick definitions from WordNet (Mount st. helens) ▸ noun:  an active volcano in the Cascade Range in southwestern Washington; erupted violently in 1980 after 123 years of inactivity ▸ Words similar to mount st. helens ▸ Usage examples for mount st. helens ▸ Words that often appear near mount st. helens ▸ Rhymes of mount st. helens ▸ Invented words related to mount st. helens