A variant spelling of fondue, a dish where food is cooked or dipped in a communal pot of melted substance like cheese, chocolate, or oil.
From French 'fondu,' which is the past participle of 'fondre' (to melt). This spelling without the final 'e' is sometimes used, though 'fondue' is the more standard English spelling.
The spelling 'fondu' vs. 'fondue' shows how English hasn't quite decided how to handle French loanwords—should we keep the French spelling 'fondue' or simplify to 'fondu'? The same happens with 'café/cafe' and 'naïve/naive.'
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