virtualism|ˈvɜːtjuːəlɪz(ə)m| [f.prec. + -ism.] The Calvinistic doctrine of Christ's virtual presence in the Eucharist. 1883Ch. Times XXI. 775 The haze and cloud of Genevan Virtualism.1905Treasury Oct. 5 Charles Wordsworth..a learned exponent of ‘virtualism’ in Eucharistic doctrine.