<p><strong>Noun</strong></p><ul><li>a·quar·i·ums</li><li>a·quar·i·a</li><li>a glass-sided tank, bowl, or the like, in which fish or other living aquatic animals or plants are kept.</li><li>a building or institution in which fish or other aquatic animals or plants are kept for exhibit, study, etc.</li></ul>