单词	obsidian
释义	obsidianobsidian /əbˈsɪdiən/ noun [uncountable] Etymology ETYMOLOGYobsidian Origin: 1300-1400 Latin obsidianus lapis, mistake for obsianus lapis stone of Obsius, a Roman traveler said to have discovered the rock a type of dark rock which looks like glass
随便看	cyclic cyclically cyclist cyclone Cyclone fence Cyclops cygnet cylinder cylindrical cymbal cynic cynical cynically cynicism cynosure cypher cypress Cypriot Cyprus Cyrillic cyst cystic fibrosis cystitis cytokinesis cytologist

英语词典包含48224条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。