| Noun | 1. | contraindication - (medicine) a reason that makes it inadvisable to prescribe a particular drug or employ a particular procedure or treatment reason - a fact that logically justifies some premise or conclusion; "there is reason to believe he is lying" medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques indication - (medicine) a reason to prescribe a drug or perform a procedure; "the presence of bacterial infection was an indication for the use of antibiotics" |