1. noun /ˈfɔː(ɹ).mæt,ˈfɔːɹ.mæt/
The radio station changed the format of its evening program.
2. verb /ˈfɔː(ɹ).mæt,ˈfɔːɹ.mæt/
I lost weeks of work when I inadvertently formatted my hard drive.
b) Change a document so it will fit onto a different type of page.
Wikipedia foundation.