Definition
Geocentric means referred to the centre of Earth. Almanac positions are often geocentric apparent — corrected for light-time, aberration and nutation but before topocentric parallax.
Geocentric
Referred to Earth's centre — standard for many ephemerides.
3D illustration
Geocentric view: directions as seen from the centre of Earth.
Use the menu and time controls to explore. Based on Jean Meeus' Astronomical Algorithms.