<span class="searchmatch">supercollisions</span> plural of <span class="searchmatch">supercollision</span>...
From super- + collision. <span class="searchmatch">supercollision</span> (plural <span class="searchmatch">supercollisions</span>) A very powerful or large-scale collision. 1994, Alexei V. Byalko, Nuclear Waste Disposal:...
collision course postcollision precollision rear-end collision recollision <span class="searchmatch">supercollision</span> collide instance of colliding collision — see wreck “collision”, in...