British spelling: to treat or coat something with aluminum or aluminum compounds, or to combine with aluminum.
From alumin- (aluminum) plus -ise (British spelling of -ize, meaning 'to make or treat with'), following British chemical nomenclature conventions.
The British and American spellings of 'aluminise' vs 'aluminize' represent a fun linguistic divide—both are correct in their regions, showing how English split into standardized variants in the 1800s.
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