名詞 obsidian:

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

ob.sid.i.an

n.（名詞）
A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava.
黑曜巖：火山玻璃，一般為黑色，帶狀，摔碎時(shí)色澤光亮，表面變曲，由火山熔巖迅速凝而成

來源：
Latin obsidi3nus
拉丁語 obsidi3nus
misreading of obsi3nus (lapis) [Obsian (stone), obsidian]
obsi3nus (lapis) 的錯(cuò)讀 [黑曜石]
after Obsius , a Roman who supposedly discovered it or a similar mineral
源自 奧伯西斯 ，一個(gè)羅馬人，他被認(rèn)為發(fā)現(xiàn)這種東西或與之相似的礦物