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alumina A natural or synthetic oxide of aluminum widely distributed in nature, often found as a constituent part of clays, feldspars, micas and other minerals, and as a major component of bauxite n
environ.	alúmina
English thesaurus
alumina [ə'l(j)u:mɪnə] abbr.
abbr.	Al2O3
dentist.	Al2O3 (MichaelBurov)
met.	Al₂O₃
weld.	aluminium oxide (Natalya Rovina)