There was an ad hoc committee that changed the borders further, for example around Beersheba.

Though orthogonal to this discussion, I would like to know more. Do you have something I could read? I think that I am unaware of this committee or its results. Thank you.

The 1947 UN resolution did not define borders for Palestine. The UN Partition plan defined borders for "A Jewish State" and "An Arab State". Palestine was the name for the geographic area, like "Rocky Mountains", it was not the name of a political entity at the time. Even Arab bodies that used the term, such as the All Palestine Governate, used the term as a geographic term.

This is a completely different argument than the one you used one comment above, where you accepted the statement that there were borders defined for Palestine in 1947 and said that the Arabs rejected that definition. Would you like to clarify exactly which facts you are going to be using?

Are you arguing just to argue? In 1947 the UN decided on borders for an Arab state - they did not name that state and at the time the term Palestine was not the name of any supposed rulers of that Arab state.

The point under discussion above is the fact that the Arabs rejected the borders of this proposed Arab state. So they started a war and the borders were changed. That's the risk they took and lost. It is disingenuous to claim that Israelis stole Arab land at this point - the Arabs tried to steal land and lost.

That was not the point under discussion at all. It was, quite specifically, “what do you mean when you say the borders of Palestine?”