<span class="searchmatch">microcollimators</span> plural of <span class="searchmatch">microcollimator</span>...
From micro- + collimator. <span class="searchmatch">microcollimator</span> (plural <span class="searchmatch">microcollimators</span>) A very small collimator...
attached to a larger one, used to point it in the correct general direction. autocollimator <span class="searchmatch">microcollimator</span> multileaf collimator microatoll, mortal coil...