per·fo·rate • v. / ˈpərfəˌrāt/ [tr.] pierce and make a hole or holes in: the worms had perforated the pages of the book from cover to cover | [as adj.] (perforated) a perforated appendix. ∎ make a row of small holes in (paper) so that a part may be torn off easily.• adj. / ˈpərfərit; -ˌrāt/ Biol. & Med. perforated: a perforate shell.DERIVATIVES: per·fo·ra·tor / -ˌrātər/ n.