<span class="searchmatch">oxygenī</span> genitive singular of oxygenum...
<span class="searchmatch">oxygenīs</span> dative/ablative plural of oxygenum...
Italianate Ecclesiastical) IPA(key): [okˈsiː.d͡ʒe.num] oxygenum n (genitive <span class="searchmatch">oxygenī</span>); second declension (New Latin, chemistry) alternative form of oxygenium...