A more thorough explanation:

CONDITIO

Conditio is a Latin word that means a condition.

• If you want to borrow my car, the conditio is that you return it with a full tank of gas.
• The job offer came with the conditio that I relocate to a different city.

The examples illustrate that conditio refers to a requirement or stipulation that must be met in order for something to happen or be granted. In the first example, the condition is that the borrower must return the car with a full tank of gas. In the second example, the condition is that the job applicant must be willing to relocate to a different city.