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单词 alumina
释义

WordReference Random House Unabridged Dictionary of American English © 2024
a•lu•mi•na  (ə lo̅o̅′mə nə),USA pronunciation n. 
  1. Chemistrythe natural or synthetic oxide of aluminum, Al2O3, occurring in nature in a pure crystal form as corundum. Also called aluminum oxide. 
  • Latin alūmin-, stem of alūmen alum1 + -a4
  • 1780–90

Collins Concise English Dictionary © HarperCollins Publishers::
alumina /əˈluːmɪnə/ n
  1. another name for aluminium oxide
Etymology: 18th Century: from New Latin, plural of Latin alūmen alum
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更新时间：2025/2/23 14:53:17