Unfavorite obsidian Synonyms

We can't find synonyms for the phrase "Unfavorite obsidian", but we have synonyms for terms, you can combine them.

UO abbreviation

UO is an abbreviation for Unfavorite Obsidian
What does UO stand for?
UO stands for "Unfavorite Obsidian"

Definitions for Obsidian


  • (noun) acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark , but transparent in thin pieces