Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cessĭcĭus (-tĭus), a, um, adj. [cessus, 1. cedo]; in jurid. lang., of or pertaining to giving up, ceding: tutor, Gai Inst. 1, 169 sqq.; Ulp. Lib. Reg. tit. 11, 7: tutela, Gai Inst. 1, 171.