Flowing together; meeting in their course, as two streams.In anatomy, having grown or become blended together, as two bones which were originally separate.In botany and zoology, blended into one: us, confluent leaves.In pathol: Running together: as, confluent pustules.Characterized by confluent pustules: as, confluent smallpox.Rich; affluent.n. A tributary stream: as, the Mohawk is a confluent of the Hudson.n. A joining or confluence, as of two streams.