n. pl. a·quar·i·ums or a·quar·i·a (-ē-ə) 1. A tank, bowl, or other water-filled enclosure in which living fish or other aquatic animals and plants are kept. 2. A place for the public exhibition of live aquatic animals and plants. [Latin aquārium, source of water, from neuter of aquārius, of water, from aqua, water; see akw-ā- in the Appendix of Indo-European roots.] a·quari·al (-ē-əl) adj. |
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