ˈpa(a)rēˌēz noun
( plural pari·e·tes pəˈrīəˌtēz)
Etymology: New Latin, from Latin, wall; akin to Old Slavic podŭpora prop, Latin sparus, sparum short spear — more at spear
1. : the wall of a cavity or hollow organ — usually used in plural
2. : the triangular middle part of each segment of the shell of a barnacle