to form in advance
transitive verbpre·formed, pre·form·ing, pre·forms
- To shape or form beforehand.
- To determine the shape or form of beforehand.
- An object that has been subjected to preliminary, usually incomplete shaping or molding before undergoing complete or final processing.
- Linguistics A reconstructed ancestral word or form.
(third-person singular simple present preforms, present participle preforming, simple past and past participle preformed)