Definition of alumina in English:

alumina

noun əˈluːmɪnəəˈlumənə

mass noun

A white solid that is a major constituent of many rocks, especially clays, and is found crystallized as corundum, sapphire, and other minerals.
矾土
Alternative name: aluminium oxide; chemical formula: Al₂O₃
Example sentencesExamples
- He derived the name from the mineral called alumina, which itself had only been named in English by the chemist Joseph Black in 1790.
- Already some sites yield little more than a mass of crystallised aluminium oxide.
- The metals are dispersed as tiny particles on a supporting framework of porous aluminium oxide.
- The major exports are bauxite, alumina, gold, and diamonds.
- The silica, alumina, and iron come from sand, clay, and iron ore.

Origin

Late 18th century: from Latin alumen (see alum), on the pattern of words such as magnesia.

Rhymes

noumena, numina

Definition of alumina in US English:

alumina

nounəˈlo͞omənəəˈlumənə

A white solid, aluminum oxide, that occurs in bauxite and is found in crystalline form as the main constituent of corundum, sapphire, and other minerals.
Aluminum oxide; chemical formula: Al₂O₃
Example sentencesExamples
- The metals are dispersed as tiny particles on a supporting framework of porous aluminium oxide.
- Already some sites yield little more than a mass of crystallised aluminium oxide.
- The silica, alumina, and iron come from sand, clay, and iron ore.
- He derived the name from the mineral called alumina, which itself had only been named in English by the chemist Joseph Black in 1790.
- The major exports are bauxite, alumina, gold, and diamonds.

Origin

Late 18th century: from Latin alumen (see alum), on the pattern of words such as magnesia.

单词	alumina
释义	Definition of alumina in English: alumina noun əˈluːmɪnəəˈlumənə mass noun A white solid that is a major constituent of many rocks, especially clays, and is found crystallized as corundum, sapphire, and other minerals. 矾土 Alternative name: aluminium oxide; chemical formula: Al₂O₃ Example sentencesExamples He derived the name from the mineral called alumina, which itself had only been named in English by the chemist Joseph Black in 1790. Already some sites yield little more than a mass of crystallised aluminium oxide. The metals are dispersed as tiny particles on a supporting framework of porous aluminium oxide. The major exports are bauxite, alumina, gold, and diamonds. The silica, alumina, and iron come from sand, clay, and iron ore. Origin Late 18th century: from Latin alumen (see alum), on the pattern of words such as magnesia. Rhymes noumena, numina Definition of alumina in US English: alumina nounəˈlo͞omənəəˈlumənə A white solid, aluminum oxide, that occurs in bauxite and is found in crystalline form as the main constituent of corundum, sapphire, and other minerals. Aluminum oxide; chemical formula: Al₂O₃ Example sentencesExamples The metals are dispersed as tiny particles on a supporting framework of porous aluminium oxide. Already some sites yield little more than a mass of crystallised aluminium oxide. The silica, alumina, and iron come from sand, clay, and iron ore. He derived the name from the mineral called alumina, which itself had only been named in English by the chemist Joseph Black in 1790. The major exports are bauxite, alumina, gold, and diamonds. Origin Late 18th century: from Latin alumen (see alum), on the pattern of words such as magnesia.
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