Membránula, pen. cor. Diminut. Cic.A little skinne: or a peer of parchment.Membranaceus. Adiect. Like parchment. or a thinne skinne. vt, Cortex membranaceus. Plin. A rinde like a thinne skinnr
Lewis and Short: Latin dictionary
membrānŭla, ae, f.dim. [id.], a little skin or membrane.I.Lit.: membranula, quae sub cute calvariam cingit, Cels. 8, 4: oculi,
membrane of the eye
, id. 7, 7, 13. —II.Transf.A.A parchment: iisque imperes, ut sumant membranulam, Cic. Att. 4, 4, b, 1.—B.Plur., an instrument or document written on parchment: quae membranulis meā manu scriptis continebuntur, Dig. 32, 102 prooem.