单词：si 

名词

• 
  [1.n.si] (同义词:[silicon( n. [化]硅, 硅元素 )]  [Si( [域] Slovenia , 斯洛文尼亚 abbr. [军] Spark Ignition, 火花塞点火 )]  [atomic_number_14]  )
• 
  注释列句：a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
• 上位词 -> [chemical_element]  [substance( n. 物质, 实质, 主旨 )]  [matter( n. 事件, 问题, 物质, 内容, 实质, 原因, (印刷或书写的)文件, (文章或讲话等的)素材 vi. 有关系, 要紧 )]  [physical_entity]  [entity( n. 实体 )] 
• 基本总称 -> [silicone( n. [化]硅树脂 )]  [clay( n. 粘土, 泥土, 肉体, 人体, 似黏土的东西, 陶土制的烟斗 )]  [feldspar( n. [矿]长石 )]  [granite( n. 花岗岩 )]  [quartz( n. 石英 )]  [sand( n. 沙, 沙子,沙滩, 沙地 v. 撒沙子 )] 
  所有总称 -> [silicone( n. [化]硅树脂 )]  [clay( n. 粘土, 泥土, 肉体, 人体, 似黏土的东西, 陶土制的烟斗 )]  [feldspar( n. [矿]长石 )]  [granite( n. 花岗岩 )]  [quartz( n. 石英 )]  [sand( n. 沙, 沙子,沙滩, 沙地 v. 撒沙子 )] 
  
• 
  [2.n.si] (同义词:[Systeme_International_d'Unites]  [Systeme_International]  [SI_system]  [SI( [域] Slovenia , 斯洛文尼亚 abbr. [军] Spark Ignition, 火花塞点火 )]  [SI_unit]  [International_System_of_Units]  [International_System]  )
• 
  注释列句：a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela); "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites"
• 上位词 -> [metric_system(n.公尺法, 公制 )]  [system_of_weights_and_measures]  [system_of_measurement]  [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 )] 
• 
  [3.n.si] (同义词:[ti( n.  〈音〉全音阶的第7音 )]  [te(n. 〈音〉全音节的第七音 )]  [si( [域] Slovenia , 斯洛文尼亚 abbr. [军] Spark Ignition, 火花塞点火 )]  )
• 
  注释列句：the syllable naming the seventh (subtonic) note of any musical scale in solmization
• 上位词 -> [solfa_syllable]  [syllable( n. [语]音节 vt. 分成音节 )]  [language_unit]  [part( n. 部分, 局部, 零件, 角色 vt. 分开, 分离, 分配 vi. 分开, 断裂, 分手 adv. 部分地, 有几分 adj. 部分的, 局部的 )]  [relation( n. 关系, 联系, 叙述, 故事, 亲戚 )]  [abstraction( n. 提取 )]  [entity( n. 实体 )]