confluent

a. [ L. confluens, -entis, p. pr. of confluere, -fluxum; con- + fluere to flow. See Fluent. ] 1. Flowing together; meeting in their course; running one into another; flowing together to form a single stream.
Syn. -- merging(prenominal). [ 1913 Webster ]

These confluent steams make some great river's head. Blackmore. [ 1913 Webster ]

2. (Bot.) Blended into one; growing together, so as to obliterate all distinction. [ 1913 Webster ]

3. (Med.) (a) Running together or uniting, as pimples or pustules. (b) Characterized by having the pustules, etc., run together or unite, so as to cover the surface; as, confluent smallpox. Dunglison. [ 1913 Webster ]