grav·i·met·ric 
(grăv′ə-mĕtrĭk)
(grăv′ə-mĕtrĭk)adj.
1. Of or relating to measurement by weight.
2. Of or relating to measurement of a gravitational field.
[From gravimetry, measurement of specific gravity, from GRAVIMETER.]
grav′i·metri·cal·ly adv.