Step 1: Admission Concept.
Upon admitting a new partner, the existing partnership agreement terminates and a new one is established. The business entity, however, continues uninterrupted.
Step 2: Firm Impact.
- The previous partnership is legally dissolved, but the firm's existence persists. - A new partnership is formed, integrating the new partner. - This transition is termed "reconstitution of partnership."
Final Answer: \[\boxed{\text{The partnership is reconstituted.}}\]