Aquarial \A*qua"ri*al\, Aquarian \A*qua"ri*an\, a. Of or pertaining to an aquarium. Aquarian \A*qua"ri*an\, n. [L. (assumed) Aquarianus, fr. aqua: cf. F. Aquarien. See {Aqua}.] (Eccl. Hist.) One of a sect of Christian in the primitive church who used water instead of wine in the Lord's Supper.