corundum

US 
UK 
  • n.【矿】刚石;【机】金钢砂(磨料);金刚砂磨轮
  • Web刚玉;钢玉;刚玉家族
n.
1.
【矿】刚石,刚玉;【机】金钢砂(磨料);金刚砂磨轮

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard