membrana

A membrane.

It sometimes happens likewise that they appear at the same time, when the membranæ are bordered by knotty excrescences and the lungs with tubercles.

By it he also explains the appearances which have induced Henle to imagine that it was furnished with innumerable glandular follicles, inasmuch as in vertical sections of the membranæ the appearance afforded by the deeper furrows is precisely that of mucous follicles.

A thin, animal-derived, flexible planar material, such as parchment.

Parchment was used for the MSS. of the Pentateuch in the time of Josephus, and the membranae of 2 Tim. iv. 13, were skins of parchment.

The parchment being much dearer than papyrus, the membranae consisted only of a few leaves.