I / intersaeptum
noun

intersaeptum

gen. intersaepti · gender neuter · decl. 2nd
intersaepio
the midriff; diaphragm
the midriff, diaphragm: intersaeptum, διάφραγμα, Gloss. Philox. —
a boundary
In gen., a boundary: regnorum, Aus. Grat. Act. § 82.