lexicon        
noun [ C ]  language specialized uk/ˈlek.sɪ.kən/ us/ˈlek.sɪ.kɑːn/
 (某语言或学科的)全部词汇;词典
(a list of) all the words used in a particular language or subject, or a dictionary
  old-fashioned词典(同 dictionary) 
a dictionary
 
英汉双解词典收录81607条英汉双解翻译词条,基本涵盖了全部常用单词的读音、翻译及用法,是英语学习的有利工具。