confluence

Concise Oxford English Dictionary © 2008 Oxford University Press:
confluence /ˈkɒnflʊəns/

▶noun

• 1 the junction of two rivers.

• 2 an act or process of merging.

– derivatives
confluent adjective.

– origin ME: from late L. confluentia, from L. confluere ‘flow together’, from con- ‘together’ + fluere ‘to flow’.