Sine Die - Without Day

The 2008 legislative session is scheduled to adjourn sine die tomorrow. I never took Latin in school and have always been curious about the term. Everyone seems to pronounce it "SIGN-nee dye". According to Wikipedia, that is the popular and accepted pronunciation, but the proper pronunciation is "SIN nay DEE ay", and it means to adjourn without a day to reconvene. In other words, the final day of a session.