flattable
adjectiveUK /ˈflætəbl/
US /ˈflætəbl/
Able to be made flat.
The cardboard box is flattable, so we can fold it up and store it.
OTHER MEANINGS
2. Capable of being pressed or smoothed down into a level surface.
The dough is flattable with a rolling pin.
3. Able to be folded or packed down for easy storage.
These flattable chairs are great for small apartments.
4. In computing, able to be converted from a nested structure into a single-level form.
The data is flattable into a simple list of values.