invention Copy link Outline I. The act of inventingII. That which is inventedIII. The mental powerIV. Fabrication • invention: I. The act of inventing: expr. by verb: by the i. of the saw, serra reperta s. inventa: v. to invent. II. That which is invented: inventum (more freq. = device): Ov. M. 1, 521. (Or expr. by verb.) III. The mental power: inventio: cf. Cic. Tusc. 1, 25, 61, vis quae investigat occulta, quae inventio atque excogitatio dicitur: also of literary i., Auct. Her. 1, 2, 3: Cic. (title of work). IV. Fabrication: commentum, mera fabula: v. fabrication, fiction.