Sentence:  Prednisone , 30 mg. daily , was substituted for <WSD>triamcinolone</WSD> from Nov. 22 until Dec. 1 , 1958 , without any improvement in the weakness . 
Meaning of the word marked with <WSD> tags:  a synthetic corticosteroid (trade names Aristocort or Aristopak or Kenalog) used as an anti-inflammatory agent