ppl. a. [f. ACTUALIZE v. + -ING2.] Making actual or real; which makes real.
1824. Coleridge, Aids to Refl. (1848), I. 28. Marriage contracted between Christians is a true and perfect symbol or mystery; that is, the actualizing faith being supposed to exist in the receivers, it is an outward sign co-essential with that which it signifies, or a living part of that, the whole of which it represents.
