From micro- + planetoid. <span class="searchmatch">microplanetoid</span> (plural <span class="searchmatch">microplanetoids</span>) (science fiction) An astronomical body smaller than a planetoid, such as an asteroid...
<span class="searchmatch">microplanetoids</span> plural of <span class="searchmatch">microplanetoid</span>...
discovery announcement. any of several larger astral bodies dwarf planet <span class="searchmatch">microplanetoid</span> minor planet planemo planetesimal planetoid on Wikipedia.Wikipedia platinode...