4 ms·

How is it not a drone?

• larsmaxfield 7mo ago
  It is a drone. But "drone" by itself is primarily used to refer to aircraft. I thought the title referred to some sort of ultra-endurance aircraft. Merriam-Webster defines drone as "uncrewed aircraft or vessel"; Cambridge limits it to "aircraft". When the drone is not an aircraft, it's often preceded with its type: for example, "underwater drone" or "ground drone".