preform noun 3verb 1forms 3 noun3 •An object that has undergone preliminary shaping but is not yet in its final form. •The rough, incomplete and unused basic form of a stone tool. •A word that is no longer in use, but has been reconstructed from current ones.Trask notes that Bq. gorosti could have had *goloztri as a pre-form, in which case the presence of -r- in the Sardinian forms might be original. — 2025 verb1 •To shape something before some other operation. formspreformed · preforming · preforms