A more thorough explanation:

Definition: Conditio sine qua non is a Latin term that means "without which not." It refers to an essential condition or thing that is necessary for something else to happen or exist.

Example: A key conditio sine qua non for a successful business is having a reliable and skilled workforce. Without good employees, a business cannot function properly and achieve its goals.

Explanation: This example illustrates how a conditio sine qua non is an indispensable condition or thing that is necessary for something else to exist or happen. In this case, a reliable and skilled workforce is essential for a business to function properly and achieve its goals. Without good employees, a business cannot succeed.