单词：vasoconstrictor 

名词

• 
  [1.n.vasoconstrictor] (同义词:[vasoconstrictor( adj. 血管收缩的 n. 血管收缩神经, 血管缩小药 )]  [vasoconstrictive( adj. [生理]血管收缩的 引起血管收缩的 )]  [pressor( adj. [医]有使血压增高的,收缩血管的,n.升高血压的物质 )]  )
• 
  注释列句：any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
• 上位词 -> [agent( n. 代理(商) )]  [causal_agent]  [physical_entity]  [entity( n. 实体 )] 
• 下位词 -> [adrenergic( adj. [生化]肾上腺素的, 释放肾上腺素的 )]  [angiotensin( n. [医]血管紧缩素 )]  [lypressin]  [naphazoline]  [vasopressor( adj. 血管加压的 )]  [coldness(n.寒冷, 冷淡 )]  [noradrenaline( n. [药]去甲肾上腺素 )]  [epinephrine( n. [生化]肾上腺素 )]  [vasopressin( n. [生化]后叶加压素,抗利尿激素 )]  [nicotine( n. 烟碱 )]