isograv

noun3

1. •
   An isoline on a map joining points of equal gravitational potential.

   • They've plotted what they call isogravs, lines of equal-g, and riding parallel to them seems to do funny things. — 1954
2. •
   Abbreviation of isogravity.
3. •
   Abbreviation of isostatic residual (gravity) anomaly.

   • The magnetic anomaly rasters (bouguerbougure, isograv and magnetic) were obtained from the USGS as was the thermal maturity point data. — 2014