单词：zero 

名词

• 
  [1.n.zero] (同义词:[nothing( n. 无, 不关紧要之事, [数]零 adv. 毫不, 决不 int. 什么也没有, 无 )]  [nil( n. 零 )]  [nix( n. <俚>无, 皆无, (德国神话中的)女水妖, 女水神 int. 停!, 不要!, 不行! vt. 禁止, 拒绝 )]  [nada( 纳达抗变色铜(基)合金 )]  [null( adj. 无效力的, 无效的, 无价值的, 等于零的 n. 零, 空, 零迅号 )]  [aught( n. 任何事物, 零 )]  [cipher( n. 密码 )]  [cypher( v. 翻译 )]  [goose_egg(n.零分, 无 )]  [naught( n. 零 )]  [zero( n. 零点, 零度 num. 零 )]  [zilch( n. 微不足道的事物（或人）, 小人物, 无, 零, 无价值之物 )]  [zip( [计]一种程序压缩的档案文件格式 n. 拉链 v. 拉开或拉上 )]  [zippo]  )
• 
  注释列句：a quantity of no importance; "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it"
• 上位词 -> [relative_quantity(相对值 )]  [measure( n. 尺寸, 量度器, 量度标准, 方法, 测量, 措施 vt. 测量, 测度, 估量, 分派, 权衡, 调节 vi. 量 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 下位词 -> [nihil( n. 无, 虚无 )]  [bugger_all] 
  派生词 -> [zero( n. 零点, 零度 num. 零 )] 
  
• 
  [2.n.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  [0]  [nought( n. 无, 零 )]  [cipher( n. 密码 )]  [cypher( v. 翻译 )]  )
• 
  注释列句：a mathematical element that when added to another number yields the same number
• 上位词 -> [digit( n. 阿拉伯数字, 手指或足趾, 一指宽(约四分之三英寸) )]  [integer( n. 整数 )]  [number( n. 数, 数字, 数量, 号码, 算术, 诗, 韵律 v. 遍号码, 共计..., 计入, 计算, 算入 )]  [definite_quantity(定量 )]  [measure( n. 尺寸, 量度器, 量度标准, 方法, 测量, 措施 vt. 测量, 测度, 估量, 分派, 权衡, 调节 vi. 量 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 派生词 -> [zero( n. 零点, 零度 num. 零 )] 
  
• 
  [3.n.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  [zero_point]  )
• 
  注释列句：the point on a scale from which positive or negative numerical quantities can be measured
• 上位词 -> [numerical_quantity]  [quantity( n. 量, 数量 )]  [concept( n. 观念, 概念 )]  [idea( n. 想法, 念头, 意见, 主意, 思想, 观念, 概念 )]  [content( n. 内容, 容量, 目录, 满足 adj. 满足的, 满意的, 愿意 vt. 使满足 )]  [cognition( n. 认识 )]  [psychological_feature(心理特征 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )] 
• 派生词 -> [zero( n. 零点, 零度 num. 零 )] 
  
• 
  [4.n.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  )
• 
  注释列句：the sight setting that will cause a projectile to hit the center of the target with no wind blowing
• 上位词 -> [sight_setting]  [gunsight( n. (枪炮的)瞄准具,瞄准器 )]  [sights]  [optical_instrument(光学仪器 )]  [instrument( n. 工具, 手段, 器械, 器具, 手段 )]  [device( n. 装置, 设计, 图案, 策略, 发明物, 设备 [计]安装设备驱动程序 )]  [instrumentality( n. 手段 )]  [artifact( n. 人造物品 )]  [whole( n. 全部, 全体, 整体, 完全之体系 adj. 所有的, 完整的, 完全的, 纯粹的, 未损伤的, 未打破的 adv. 完全, 整个 )]  [object( n. 物体, 目标, 宾语, 对象 vi. 反对, 拒绝, 抗议 vt. 提出...来反对 )]  [physical_entity]  [entity( n. 实体 )] 

动词

• 
  [1.v.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  )
• 
  注释列句：adjust (an instrument or device) to zero value
• 上位词 -> [adjust( vt. 调整, 调节, 校准, 使适合 )]  [change( n. 改变, 变化, 转变, 找回的零钱, 找头, 辅币 vt. 改变, 变革, 改造, 兑换 )] 
• 派生词 -> [zero( n. 零点, 零度 num. 零 )]  [zero( n. 零点, 零度 num. 零 )]  [zero( n. 零点, 零度 num. 零 )] 
  
• 
  [2.v.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  [zero_in]  )
• 
  注释列句：adjust (as by firing under test conditions) the zero of (a gun); "He zeroed in his rifle at 200 yards"
• 上位词 -> [adjust( vt. 调整, 调节, 校准, 使适合 )]  [change( n. 改变, 变化, 转变, 找回的零钱, 找头, 辅币 vt. 改变, 变革, 改造, 兑换 )] 

形容词

• 
  [1.a.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  [0]  )
• 
  注释列句：indicating the absence of any or all units under consideration; "a zero score"
• 近义词 -> [cardinal( n. 枢机主教, 红衣主教 adj. 主要的, 最重要的 )] 
  
• 
  [2.a.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  )
• 
  注释列句：having no measurable or otherwise determinable value; "the goal is zero population growth"
• 近义词 -> [no( n. 否定, 投反对票者 adj. 没有, 不许, 反对 adv. 不, 并不, 毫不 [域] Norway , 挪威 )] 
  
• 
  [3.a.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  )
• 
  注释列句：indicating an initial point or origin
• 近义词 -> [ordinal( n. 序数, [宗]仪式书 adj. 顺序的, 依次的 )] 
  
• 
  [4.a.zero] (同义词:[zero( n. 零点, 零度 num. 零 )]  )
• 
  注释列句：of or relating to the null set (a set with no members)
• 属于名词 -> [null_set(n. 〈数〉零集，空集 )]