English dictionary



Hint: Question mark (?) is a wildcard. Question mark substitutes one character.

English noun: obsidian

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


Broader (hypernym)volcanic glass









Based on WordNet 3.0 copyright © Princeton University.
Web design: Orcapia v/Per Bang. English edition: .
2026 onlineordbog.dk