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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 trf
 tuned radio frequency的簡寫

From: WordNet (r) 2.0

 TRF
      n : hormone released by the hypothalamus that controls the
          release of thyroid-stimulating hormone from the anterior
          pituitary [syn: thyrotropin-releasing hormone, TRH, thyrotropin-releasing
           factor, protirelin]