Tomato passata

anyone know exactly what tomato passata is? it's called for in a recipie i'm wanting to make...and where would i buy some?

Definitions of passata on the Web:

* A smooth tomato sauce.
thefoody.com/glossary/glossaryp.html

* Italian smooth, sieved tomatoes sold in jars or cartons.
www.sanjeevkapoor.com/reference/glossary/glossary17.asp

* Italian for mash or puree.
www.online-cookbook.com/goto/cook

* Purée of Tomato. Also used to make sauces. If you pass chopped or whole tomatoes through a food mill or blend them you will get passata.
www.nonnalinaskitchen.com/tools/glossary.htm

* sieved plum tomatoes
www.great-cooking-made-easy.com/glossary-L-R.html

Thanks Google!

At any supermarket.