| UPP | from 280 million to 310 million years ago |
|---|---|
| UPP | one of the large alphabetic characters used as the first letter in proper names and sometimes for emphasis |
| UPP | the class occupying the highest position in the social hierarchy |
| UPP | the class occupying the highest position in the social hierarchy |
| UPP | a higher deck |
| UPP | position of advantage and control |
| UPP | the upper jawbone in vertebrates |
| UPP | the upper jawbone in vertebrates |
| UPP | the limit on the upper (or northernmost) side of something |
| UPP | the largest possible quantity |
| UPP | the upper part of the mantle |
| UPP | the peninsula between Lake Superior and Lake Michigan that forms the northwestern part of Michigan |