<span class="searchmatch">quaternāriīs</span> dative/ablative masculine/feminine/neuter plural of quaternārius...
<span class="searchmatch">quaternarii</span> plural of quaternarius <span class="searchmatch">quaternāriī</span> inflection of quaternārius: nominative/vocative masculine plural genitive masculine/neuter singular...
From Latin quaternārius. quaternarius (plural <span class="searchmatch">quaternarii</span>) (prosody) A unit of four metrical feet. tetrapody binarius ternarius senarius septenarius octonarius...