- obsessive-compulsive disorder,
- obsidian dating,
- obsidional coin,
Origin of obsidian
Examples from the Web for obsidian
“I think the main reason is the availability of information and community groups that the Internet provides,” said Obsidian.
Dragonglass: The name accorded to volcanic glass or obsidian.
Some clothing with feathers woven in, and some bits of obsidian and of blue thread were found, but no weapons or utensils.Unknown Mexico, Volume 1 (of 2)|Carl Lumholtz
Bronze was in common use, but obsidian knives and arrow-heads of fine workmanship abound in the ruins.The Discovery of America Vol. 1 (of 2)|John Fiske.
Over an area several miles square the ground is strewn with hewn blocks of stone and fragments of pottery and obsidian.The Works of Hubert Howe Bancroft, Volume IV|Hubert Howe Bancroft
The polished battle-axe was more used in Grand Canary, while stone and obsidian, roughly cut, were commoner in Teneriffe.
Along with these were other small points (Plate 15, p. 36), two of which were made of obsidian.Handbook of Alabama Archaeology: Part I Point Types|James W. Cambron
Word Origin for obsidian
"dark, hard volcanic rock," 1650s, from Latin obsidianus, misprint of Obsianus (lapis) "(stone) of Obsius," name of a Roman alleged by Pliny to have found this rock in Ethiopia.