Wiktionary
n. (context geology English) An igneous, volcanic rock with a high iron content.
WordNet
n. a gray volcanic rock containing plagioclase and quartz and other crystalline minerals
Wikipedia
Dacite is an igneous, volcanic rock. It has an aphanitic to porphyritic texture and is intermediate in composition between andesite and rhyolite. The word dacite comes from Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains (now modern Romania and Moldova) where the rock was first described.
Usage examples of "dacite".
The Dacite happened to be nearby, so he could hear what they were saying.
Natayos was a shabbily dressed Dacite, and he was reeling with exhaustion as he staggered into the room.
Khwaj implacably advanced on the cringing Dacite, extending one vast paw.
He and Talen are planting false stories with that Dacite in order to confuse the other side.
Evidently the Dacite passed the word on, and the Cynesgan High Command took it seriously enough to send their main force south to defend southern Cynesga.
Worse yet, an obscure and probably heretical tradition of the Dacite Church prevented laymen from speaking aloud during Sabbath services.
Krager asked CabaL, a shabby Dacite brigand of his acquaintance with whom he had frequently gotten drunk.