<span class="searchmatch">duodecagonal</span> (not comparable) Alternative form of dodecagonal. 1770, Joseph Baretti, A Journey from London to Genoa, Through England, Portugal, Spain,...
<span class="searchmatch">duodecagonal</span> From dodecagon + -al. dodecagonal (not comparable) Having twelve sides and twelve angles having twelve sides and twelve angles From dodecàgon...