Personnel/ˌpɜːrsəˈnel/ Definition 1 of 2Pro Tip 1/3Company Size Large companies usually have more personnel than small businesses. The multinational corporation has a personnel of over 10,000 employees. Pro Tip 2/3Workforce Diversity Personnel can refer to a diverse set of employees with different roles and skills. Our personnel include engineers, designers, and salespeople. Pro Tip 3/3Non-human Resources Only use 'personnel' for people, not machines or other resources. The new software isn't part of the personnel; it's a tool they use.