Final answer:
The problem part of a nursing diagnosis definition is a concise description of the problem or need that the nursing diagnosis will address. Its purpose is to clearly identify the problem and provide a basis for developing appropriate nursing interventions and care plans.
Step-by-step explanation:
The problem part of a nursing diagnosis definition is a concise description of the problem or need that the nursing diagnosis will address. It identifies the specific issue or concern that the nursing diagnosis aims to address. The purpose of the problem part is to clearly identify the problem and provide a basis for developing appropriate nursing interventions and care plans.