Rotterdam[rät′ər dam′; Durō̂′tər däm′]
seaport in SW Netherlands, in the Rhine delta: pop. 599,000
A city of southwest Netherlands on the Rhine-Meuse delta southeast of The Hague. Chartered in 1328, it was a major commercial power during the 1500s and 1600s and is today a thriving port accessible via canal to oceangoing vessels.