Origin of efficaciousClassical Latin efficax (gen. efficacis) from efficere, to bring to pass, accomplish (see effect) + -ous
An example of efficacious is a program that was designed to help stop crime and that reduced the crime rate by 80 percent.
Origin of efficaciousFrom Latin efficāx efficāc- from efficere to effect ; see effect .
(comparative more efficacious, superlative most efficacious)
- A similar process, and equally efficacious, was introduced by F.
- Of the numerous remedies proposed the most efficacious is perhaps sodium amalgam.
- And too efficacious an instrument of church discipline lightly to be thrown away.
- Efficacious for the good of men's souls and bodies, and for the confusion of the powers of darkness.'
- In cases where diarrhoea is very obstinate and lasts for weeks, sulphuric acid is sometimes more efficacious than alkalis; and in chronic colics it may be necessary to treat the mucous membrane by local application of astringent solutions.