/ˌtɛtɹəˈhiːdɹən/ Rhymes: -iːdɹən <span class="searchmatch">tetrahedron</span> (plural tetrahedra or <span class="searchmatch">tetrahedrons</span>) (geometry) A polyhedron with four faces; the regular <span class="searchmatch">tetrahedron</span>, the faces of which...
tetrahedra <span class="searchmatch">tetrahedrons</span> plural of <span class="searchmatch">tetrahedron</span>...
truncated <span class="searchmatch">tetrahedrons</span> plural of truncated <span class="searchmatch">tetrahedron</span>...
English Wikipedia has an article on: triakis <span class="searchmatch">tetrahedron</span> Wikipedia triakistetrahedron triakis <span class="searchmatch">tetrahedron</span> (plural triakis tetrahedra) (geometry) A Catalan...
fire <span class="searchmatch">tetrahedron</span> (plural fire <span class="searchmatch">tetrahedrons</span> or fire tetrahedra) An extension of the fire triangle, adding the chemical chain reaction as the fourth element...
an article on: truncated <span class="searchmatch">tetrahedron</span> Wikipedia truncated <span class="searchmatch">tetrahedron</span> (plural truncated tetrahedra or truncated <span class="searchmatch">tetrahedrons</span>) (geometry) A convex polyhedron...
<span class="searchmatch">tetrahedrons</span> Rhymes: -ɛdɹə tetrahedra plural of <span class="searchmatch">tetrahedron</span>...
From ortho- + <span class="searchmatch">tetrahedron</span>. orthotetrahedron (plural orthotetrahedra) A <span class="searchmatch">tetrahedron</span> with three pairs of faces at right angles to one another. orthotetrahedral...
From hyper- + <span class="searchmatch">tetrahedron</span>. hypertetrahedron (plural hypertetrahedrons) (geometry) An analog of a <span class="searchmatch">tetrahedron</span> that extends into hyperspace, having more...