<span class="searchmatch">obsidiānōrum</span> genitive masculine/neuter plural of obsidiānus...
obsidiānae obsidiāna genitive obsidiānī obsidiānae obsidiānī <span class="searchmatch">obsidiānōrum</span> obsidiānārum <span class="searchmatch">obsidiānōrum</span> dative obsidiānō obsidiānae obsidiānō obsidiānīs accusative...