PREV'ALENCY, n. Superior strength, influence or efficacy; most efficacious force in producing an effect.
The duke better knew what kind of arguments were of prevalence with him.1. Predominance; most general reception or practice; as the prevalence of vice, or of corrupt maxims; the prevalence of opinion or fashion.2. Most general existence or extension; as, the prevalence of a disease.3. Success; as the prevalence of prayer.