Definition of gradiometer in US English:



  • 1A surveying instrument used for setting out or measuring the gradient of a slope.

    1. 1.1Physics An instrument for measuring the gradient of an energy field, especially the horizontal gradient of the earth's gravitational or magnetic field.
      • ‘The gravity gradiometer that's being used this week was developed at great expense by Lockheed-Martin during the Cold War.’
      • ‘A well-balanced SQUID gradiometer operating in the geomagnetic field can achieve a common mode rejection of up to 10.’
      • ‘One such invention was the rotating cruciform gravity gradiometer mass detector, which measures Earth's subsurface mass variations or gravitational multipole moments.’