Related formsplan·et·oi·dal, adjective
Examples from the Web for planetoid
Your may-be ruler Mercury teams with loving Venus, Monday, squaring Neptune and Chiron, the planetoid of healing.
I had every executive on the planetoid jumping before I was through.
On the surface of the planetoid, giant mushrooming clouds appeared climbing into the airless void.Danger in Deep Space|Carey Rockwell
Ceres has a pretty respectable gee pull for a planetoid: Three per cent of Standard.