From geo- + boundary. <span class="searchmatch">geoboundary</span> (plural <span class="searchmatch">geoboundaries</span>) A geological boundary (typically between strata)...
<span class="searchmatch">geoboundaries</span> plural of <span class="searchmatch">geoboundary</span>...
boundary scan boundary stone boundary term boundary umpire coboundary <span class="searchmatch">geoboundary</span> grain boundary isoboundary Kootenay Boundary K-T boundary lower boundary...
geo-block geo-blocking geobotanic geobotanical geobotanist geobotany <span class="searchmatch">geoboundary</span> geocache geocaching geocaulosphere geocell geocentric geocentrism geochart...