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2 definitions found

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 JND 縮寫

From: WordNet (r) 2.0

 jnd
      n : (psychophysics) the difference between two stimuli that
          (under properly controlled experimental conditions) is
          detected as often as it is undetected [syn: just-noticeable
           difference]