Celestial bodies in orbit around
the sun at a distance greater than that of Neptune that have sufficient mass for their self-
gravity to overcome rigid body forces so that they assume a hydrostatic
equilibrium (near-spherical) shape, and that have not cleared the neighborhood around their orbit.
Person 1: "So what are some plutoids?"
Person 2: "
Pluto and Eris are the only known plutoids. Ceres is between Mars and Jupiter, so it is NOT a plutoid."
Person 1: "
Whatever. The International Astronomical Union (IAU) is
crazy anyway. Who uses this stuff?"