Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
consignātīo, ōnis, f. [consigno], a written proof, a document (post-class. and rare), * Quint. 12, 8, 11 Spald.; Dig. 22, 3, 4 sq.; 48, 10, 16, § 2 al.