subradar

English

Etymology

From sub- +‎ radar.

Adjective

subradar (not comparable)

1. Below an area being investigated by radar.
   • 1993, Clifford M. Will, Theory and Experiment in Gravitational Physics, page 175:

     One of the major difficulties with this method is that the largely unknown planetary topography can introduce errors in round trip travel times as much as 5 μs (i.e., the subradar point could be a mountaintop or a valley) […]