Gravimetric disturbance
A gravimetric disturbance was an anomaly in the gravimetric energy around an area.

In 2153,  encountered a small test pod caught in a gravimetric disturbance formed by five spheres coming together in the Delphic Expanse. ()

In 2369, Deep Space 9 was invaded by an embryonic lifeform and Lieutenant Dax and Chief O'Brien used tritium to trace the origins of a gravimetric disturbance, which ended up being a lifeform. ()
 
Later that year, the  located the  stuck in a large gravimetric disturbance. ()

de:Gravimetrische Störung
Physics