デポ剤ざいMeanings1noundepot drug; depot preparationmedicineMedical term for a long-acting injectable drug formulation that is slowly released from an injection site.デポ剤ざいは、一いち度どの注ちゅう射しゃで長ちょう期き間かん効こう果かが持じ続ぞくする。A depot drug provides a long-lasting effect with a single injection.