单词：ketamine 

名词

• 
  [1.n.ketamine] (同义词:[ketamine( 克他命(一种高效麻醉剂) )]  [ketamine_hydrochloride]  [Ketalar]  )
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  注释列句：a general anesthetic and tranquilizer (not a barbiturate) that is administered intravenously or intramuscularly; used mainly by veterinarians or for minor surgery with geriatric or pediatric patients; taken in large doses it causes hallucinations similar to those associated with the use of PCP
• 上位词 -> [general_anesthetic(n. 〈医〉全身麻醉 )]  [anesthetic( n. 麻醉剂, 麻药 adj. 麻醉的 )]  [drug( n. 药, 麻药, 麻醉药, 滞销货 vi. <俗> 吸毒 vt. 使服毒品, 毒化 )]  [agent( n. 代理(商) )]  [causal_agent]  [physical_entity]  [entity( n. 实体 )] 
• 下位词 -> [K( n. 字母k )]