'efficaciousness' definitions:
Definition of 'efficaciousness'
(from WordNet)
noun
Capacity or power to produce a desired effect; "concern about the safety and efficacy of the vaccine" [syn: efficacy, efficaciousness] [ant: inefficaciousness, inefficacy]
Definition of 'efficaciousness'
From: GCIDE
- efficaciousness \ef`fi*ca"cious*ness\ n. the capacity or power to produce a desired effect.
- Syn: efficacy. [WordNet 1.5]