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Definition of adda (river) in English English dictionary
- Adda River
- River, Lombardy region, Italy. It flows southward 194 mi (313 km) through Lake Como and across the Lombardy Plain before joining the Po River above Cremona. It is used extensively for hydroelectric power in its upper course and for irrigation on the plain. Historically, it has served as a strategic defense line in wars dating back to the Roman period