prefix——

2.前置代号（置于前面的单词或字母、数字）a word, letter or number that is put before another

1.在…前面加（字母或数字）to add letters or numbers to the beginning of a word or number

1.【语】前缀,词首;前加成分

2.人名前用的尊称

3.【数】首标

1.〈古〉预先指定,预先任命

2.把...放在前头;作...的前缀;给...附加标题

1.a group of letters that is added to the beginning of a word to change its meaning. For example, the prefix “un-” is added to the word “important” to form “unimportant.”

2.the first set of numbers in a telephone number

3.a title such as “Dr.” or “Mrs.” that is used before someone’s name

1.to add something before or in front of something else