If you initially saved the file as a Word document it should still be
available to reopen & edit rather than trying to open the PDF.
OTOH, If you chose PDF when you first save the file it's a bit tougher as
the others have indicated. Unfortunately, not everyone has Acrobat
but
there are other PDF editors available. You can even use Apple's Preview app.
Using Preview, if there is more than one page first select View> PDF
Display> Continuous, then View> PDF Display> Page Breaks (to clear the
check). Use the Text Tool from the Tool Mode buttons to select all the text,
copy it, then paste into a new blank Word document. [You may want to use
Edit> Paste Special> Unformatted Text.] You'll still need to do a bit of
editing to reconstruct the document. It just depends on how 'fancy' the
original is as to how much work will be involved. You may also be able to
minimize the amount of reworking if you copy/paste portions rather than all
at once.
That will not include any graphic content from the PDF. You'll have to
reinsert/recreate them, although you may be able to copy them from the PDF
using the Select Tool. Copying them may also result in reduced quality for
printing purposes.
HTH |:>)
Bob Jones
[MVP] Office:Mac