ne·crot·ic /nəˈkrɑtɪk, nɛ-/ 形容詞
  壞死的
  Ne·crot·ic a. Med. Affected with necrosis; as, necrotic tissue; characterized by, or producing, necrosis; as, a necrotic process.
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  necrotic
       adj : relating to or affected by necrosis; "necrotic tissue"