antitrinitarian

& s. [Eng. anti, trinity; suffix -arian. In Ger. antitrinitarisch, a.; antitrinitarier, s.; Port. anti trin it a rio.] 1. As adjective: Opposed to the doctrine of the Trinity. 2. As substantive: One opposed to the doctrine of the Trinity. "The anti-trinitarians have renewed Arius's old heresy; and they are called Anti - trinitarians , because they blaspheme and violate the Holy Trinity."-Pagit: Heresiography, p. 116.