What does subject to mean?

phr. often affected by something, especially something unpleasant; only able to happen if something else happens

subject to

Frequency

Difficulty

phrase

often affected by something, especially something unpleasant

Departure times are subject to change.

only able to happen if something else happens

The pay rise is subject to discussion with the board.

often affected by something, especially something unpleasant; only able to happen if something else happens