In linguistics, univerbation is the diachronic process of combining a fixed expression of several words into a new single word.Brinton, Laurel J.
univerbation:
uni- +? verb +? -ation
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。