Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
circum-tentus, a, um, Part. [tendo], bound or covered with something that is stretched or drawn around,begirt (anteand post-class.): elephanticorio, * Plaut. Mil. 2, 2, 80:vasculumlinteolis, Cael. Aur. Acut. 3, 17, 174.