Interstitium, interstitij, n. g. Mac. A istãce or space betweene.Interstitium lunæ. Apul. The space betweene the old moone and the new.
Lewis and Short: Latin dictionary
interstĭtĭum, i, n. [id.], a space between, interstice, interval (post-Aug.). I. Of place, Macr. Somn. Scip. 1, 6; Mart. Cap. 8, 837; Amm. 20, 3, 10.— II. Of time, an interval: quantum interstitii dies habet, Mart. Cap. 6, 601.— Plur., Mart. Cap. 6, 600.
