Where Can I Find A Cinema Dictionary?

You can get the new Biographical Dictionary of Film if you are looking for information about people in cinema. It's on sale at amazonbooks if you want to take a  look.

I don't know if there is a dictionary specifically for cinematic terms, though there are online glossaries which you can find if you Google: Glossary cinematic terms. What might also be useful is a dictionary of literary, theatrical and cinematic terms, and there is at least one of these available second hand from abebooks. They seem to be cheap too, though of course there would be postage to pay.