Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
trĭpartītō (-pertītō), adv., v. tripartitus fin.
trĭpartītus or -pertītus, a, um, Part. [ter-partior], divided or divisible into three parts, threefold, tripartite (rare, but good prose): ea causa tripertita erit in accusatione, Cic. Verr. 2, 3, 5, § 12: qui tripertitas orbis terrarum oras atque regiones notavit, id. Sest. 61, 129: tripartita ab iis inducitur ratio bonorum, id. Ac. 1, 5, 21: divisio tripartita (al. tripertita), id. Off. 3, 2, 9: exercitus, Tac. A. 2, 74: jus privatum, quod tripartitum est, Just. Inst. 1, 1, 4.
Substt
trĭpertītō, adv., v. tripartito.