A desk that can be adjusted in height, either manually or electronically, is commonly referred to as a "height adjustable desk" or a "sit-stand desk." Other popular names include:

1. Standing Desk: A general term for desks that can be adjusted to allow for standing work.
2. Sit-Stand Desk: Highlights the ability to alternate between sitting and standing positions.
3. Adjustable Height Desk: Emphasizes the desk's capacity to change height.
4. Electric Standing Desk: Specifically refers to height-adjustable desks that use electric motors for adjustment.
5. Pneumatic Standing Desk: Refers to desks that use gas cylinders to adjust the height smoothly.
6. Motorized Standing Desk: Another term for desks with electric height adjustment mechanisms.
7. Ergonomic Desk: Sometimes used to describe desks designed for better ergonomics, including height-adjustable options.
8. Rising Desk: A less common term that still conveys the adjustable nature of the desk.

These desks are designed to promote better posture, reduce sedentary time, and improve overall workspace ergonomics by allowing users to easily switch between sitting and standing positions.