Oxide in rubies and sapphires Crossword Clue
7 letters · New York Times · Tuesday, June 7, 2016 · 61-Across
Appeared in 1 New York Times Crossword: Tuesday, June 7, 2016.
Exact puzzle match · New York Times · June 7, 2016 · 61-Across · 7 letters
ALUMINA0 of 7 letters revealed
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What does this clue mean?
any of various forms of aluminum oxide occurring naturally as corundum
noun
WordNet® (Princeton University)
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