| English Dictionary |
VOLCANIC GLASS
| Pronunciation (US): |  | (GB): | |
| IPA (US): |  |
Dictionary entry overview: What does volcanic glass mean?
• VOLCANIC GLASS (noun)
The noun VOLCANIC GLASS has 1 sense:
1. a kind of natural glass produced when molten lava cools very rapidly
Familiarity information: VOLCANIC GLASS used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
A kind of natural glass produced when molten lava cools very rapidly
Classified under:
Nouns denoting substances
Hypernyms ("volcanic glass" is a kind of...):
volcanic rock (extrusive igneous rock solidified near or on the surface of the Earth)
Hyponyms (each of the following is a kind of "volcanic glass"):
obsidian (acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces)
pitchstone (dark acid granitic glass)
tachylite (a basic or basalt glass)
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