<span class="searchmatch">macropyramids</span> plural of <span class="searchmatch">macropyramid</span>...
From macro- + pyramid. <span class="searchmatch">macropyramid</span> (plural <span class="searchmatch">macropyramids</span>) (crystallography) A macroprism. Part or all of this entry has been imported from the 1913 edition...
macropinacoid and the unit prism; the corresponding pyramids are called <span class="searchmatch">macropyramids</span>. <span class="searchmatch">macropyramid</span> Part or all of this entry has been imported from the 1913 edition...