English Explanatory Dictionary

helenite

English dictionary entry

Meanings

noun
  1. A greenish artificial gem, made by melting and vitrifying volcanic ash from the 1980 eruption of Mount Saint Helens.

Word forms

helenite

Etymology

From Helen + -ite. From Mount St Helens, whose volcanic ash is used to manufacture helenite.

Synonyms

Mount St. Helens obsidian
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