Efficacy



noun
1.
(Effectiveness, fruitfulness) ភាពសក្ដិសិទ្ធិ, ភាពនាំអោយកើតផលបាន
ENGLISH MEANING
noun
1.
Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer.