Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cŏagmentātĭo, ōnis, f. [coagmento], a joining or connecting together; a connection, combination, union (several times in Cic.; elsewh. rare): corporis, Cic. Univ. 5 fin.: non dissolubilis, id. N. D. 1, 8, 20: naturae, id. ib. 2, 46, 119.
Plur., Vitr. 2, 9, 11; Plin. 36, 22, 51, § 172.