grav·i·sphere 
(grăvĭ-sfîr′)
(grăvĭ-sfîr′)n.
The spherical region of space dominated by the gravitational field of a celestial body.
[GRAVI(TY) + SPHERE.]
- microglossia
- microgram
- micrograph
- micrographic
- microgravity
- microgreens
- microhabitat
- microinject
- microinjection
- microinstruction
- microlending
- microlith
- microlithic
- microloan
- micromachine
- micromanage
- micromanipulation
- micromanipulative
- micromanipulator
- micromere
- micrometeorite
- micrometeoroid
- micrometeorological
- micrometeorologist
- micrometeorology