prefix

/ˈpriˌfɪks/   noun a word, letter, or number placed before another 置于前面的单词或字母、数字 the Institute was granted the prefix ‘Royal’ in 1961. an element palced at the beginning of a word to adjust or qualify its meaning (e.g. ex-, non-, re-) or ( in some languages) as an inflection <语>前缀(置于句首以改变、修饰词义或再有的语言中表曲折变化 a title palced before a name (e.g. Mr) 人名前的称谓 V-T 在…前加前缀;在…前加上 prefix [ˈpriːfɪks] suffix [ˈsʌfɪks] prefix and suffix of one file like abc.jpg, ‘abc’ is the prefix, ‘jpg’ is the suffix.