internal membranen.
/ɪnˌtəːnl ˈmɛmbreɪn/, U.S. /ᵻnˌtərnəl ˈmɛmˌbreɪn/ 1. Anatomy. A membrane lining a part of the body, esp. a mucous membrane or endothelium. Now rare.
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the world > life > the body > bodily substance > membrane > [noun] > mucous
internal membrane1638
mucous membrane1801
mucous tissue1833
mucous layer1861
1638 A. Read Man. Anat. Body of Man (new ed.) i. vii. 59 These three vessels passe betweene the common and proper coats [of the stomacke], and end in their orifices in the internall membrane.
1716 Pharmacopœia Radcliffeana 100 By its saline Particles it gives a Shock to the internal Membrane of the Lungs.
1732 A. Monro Anat. Treat. Nerves 40 in Anat. Humane Bones (ed. 2) The superior posterior Part of the left subclavian Vein, whose internal Membrane duplicated, forms a semilunar Valve.
1833 J. Forbes et al. Cycl. Pract. Med. I. 145/1 Ulceration of the internal membrane sometimes takes place from acute inflammation.
1983 Texas Monthly Aug. 182/2 She entered the hospital again on December 21, suffering from diarrhea, dehydration, and possible inflammation of an internal membrane.
2. Cell Biology. The cell membrane of a plant cell, contained within the cell wall (now rare); a membrane contained within a cell or organelle.
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1839 W. B. Carpenter Princ. Gen. & Compar. Physiol. viii. 277 The presence of an internal membrane is not quite so evident [in the individual cells of the plant frog-bit].
1938 Amer. Jrnl. Bot. 25 82/2 Sugar was not absorbed through external leaf membranes, nor through the internal membranes of root cells.
2011 L. L. Barton & D. E. Northup Microbial Ecol. iii. 87 It would be consistent with Darwinian evolution that prokaryotic cells with internal membranes would have a competitive advantage.
This is a new entry (OED Third Edition, June 2015; most recently modified version published online March 2022).
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n.1638