Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
vendĭtātĭo, ōnis, f. [vendito, an offering for sale; hence, trop.], a specious display, a boasting, vaunting, blazoning: quin etiam mihi quidem laudabiliora videntur omnia, quae sine venditatione et sine populo teste fiunt, Cic. Tusc. 2, 26, 64: venditatio atque ostentatio, id. Lael. 23, 86: ostentatio artis et portentosa scientiae venditatio, Plin. 29, 1, 8, § 25.