pre-fix

Grammar. an affix placed before a word, base, or another prefix to modify a term's meaning, as by making the term negative, as un- in unkind, by signaling repetition, as re- in reinvent, or by indicating support, as pro- in proabolition. Compatible prefixes can work together, as un- and re- in unrefundable.

something prefixed, as a title before a person's name: She used the prefix “Ms.” rather than “Lady” at the law office where she worked.

to fix or put before or in front: to prefix an impressive title to one's name.

Grammar. to add as a prefix.

to fix, settle, or determine beforehand: If you call a taxi, the rate to the airport will be prefixed.

Biology. to apply the first of two fixatives to.