premodify

verb

1. To modify in advance.

   “premodifying phrase”

   “premodifying clause”

   “When a premodifying phrase (such as this one) is used, the meaning of the clause that follows it (such as this one) is qualified or altered.”

   “When you order a high-end laptop, the website's order form lets you select optional customizations, which can allow you to premodify your machine so as to prepare for further mods later.”