In the context of Anumana (inference), the presence of the middle term in the minor term is called:

The middle term's presence in the minor term (paksha) is called pakshadharmata.

In inference the reason (hetu) must first be seen residing in the subject.

Smoke, the reason, is observed present on the hill, the paksha.

This 'reason being a property of the subject' is pakshadharmata.

It is distinct from vyapti, the invariable concomitance of reason and probandum.