mesoplanet
nounEtymology From meso- + planet.
1
Astronomy, Natural sciences a planet that is between the size of Mercury and Ceres
2
Astronomy, Natural sciences A habitable planet, such as Earth, that has a surface temperature of 0–50°C, optimal for much terrestrial life.
- Related terms
- planemo
- Coordinate terms
- dwarf planet, psychroplanet, thermoplanet