microplanetoidEtymologyFrom micro- + planetoid.nounAn astronomical body smaller than a planetoid, such as an asteroid or planetesimal.“I mean, the Fomalhauters weren't having enough problems with the repairs to their exhaust duct—their StarGrazer'd taken a hit from a rogue microplanetoid—then this earthbound yo-yo tries to put a goddam drift netter up their tailpipe.”