/ˈpri:fɪks ||; ˈpriˌfɪks/noun [C] (grammar语法) a letter or group of letters that you put at the beginning of a word to change its meaning 前缀，词首（置于单词前以改变其意义的字母或一组字母） ☞Look at affix ² and suffix. 参看affix^2及suffix。