sheen obsidian
sheen obsidian · sheen obsidians
A rare type of volcanic glass that forms when gas bubbles or mineral inclusions become…A rare type of volcanic glass that forms when gas bubbles or mineral inclusions become trapped in layers of rapidly cooling lava.
Meaning
1 senses(countable, uncountable)A rare type of volcanic glass that forms when gas bubbles or mineral inclusions become trapped in layers of rapidly cooling lava.
Forms
plural: sheen obsidians| Singular | sheen obsidian |
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| Plural | sheen obsidians |
regular
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable