A multipurpose tablet design that supports both vertical (portrait) and horizontal (landscape) orientations is commonly called a responsive design or adaptive design.
More specifically, when referring to the tablet’s form and usability:
- Responsive Design: This refers to the design approach (especially in software and UI/UX) where the layout dynamically adjusts to the screen orientation and size, providing an optimal experience in both vertical and horizontal modes.
- Rotatable or Convertible Design: This term is often used in hardware to describe devices that can be easily used in both orientations.
- Flexible or Multi-orientation Design: Emphasizes ease of switching and usability in both modes.
In summary, this design is usually labeled as a responsive or adaptive multipurpose design—enabling seamless use of a tablet in both portrait and landscape modes.