Pre·fix v. t. [imp. & p. p. Prefixed p. pr. & vb. n. Prefixing.]
1. To put or fix before, or at the beginning of, another thing; as, to prefix a syllable to a word, or a condition to an agreement.
2. To set or appoint beforehand; to settle or establish antecedently. [Obs.] “ Prefixed bounds. ”
And now he hath to her prefixt a day. --Spenser.