remedial in WordNet English dictionary

1. tending to cure or restore to health
   "curative powers of herbal remedies"; "her gentle healing hand"; "remedial surgery"; "a sanative environment of mountains and fresh air"; "a therapeutic agent"; "therapeutic diets"
   curative  healing  alterative  remedial  sanative  therapeutic 
   
2. tending or intended to rectify or improve
   "a remedial reading course"; "remedial education"
   remedial