Dictionary

noun

Definitions

1. An asteroid of any size

   Example: 1979 Tsunami generation by pelagic planetoid impact

2. An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object

3. A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna

   Example: 1991 Optimal trajectories for an ion driven spacecraft from earth to the planetoid Vesta

4. A dwarf planet