Potential Infinite

Potential infinity is one of the two classifications Aristotle assigns to infinity in his Physics. Potential infinities, in his system, are simply processes that do not end. For example, it is possible to imagine someone counting one integer after another for the remainder of their days, but impossible to imagine that this person can continue their count into infinity. Thus, infinity can never be actualized.

https://www.oxfordhandbooks.com/view/10.1093/oxfordhb/9780195187489.001.0001/oxfordhb-9780195187489-e-11