rejoin

Short definition from Wiktionary

Verb

1. 1
   To join again; to unite after separation.
2. 2
   To come, or go, again into the presence of; to join the company of again.
3. 3
   To state in reply.
4. 4
   To answer to a reply.
5. 5
   To answer, as the defendant to the plaintiff's replication.
6. 6
   To re-insert a patent claim, typically after allowance of a patent application, applied to patent claims that had been withdrawn from examination under a restriction requirement, based on rejoinder.