membrane(redirected from pupillary membrane)
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a. A thin, pliable layer of tissue covering surfaces or separating or connecting regions, structures, or organs of a living organism.
b. A semipermeable layer that bounds a cell or an organelle, typically consisting of lipids and proteins.
2. A thin, pliable sheet or layer of natural or synthetic material: the resonating membrane of a kazoo.
3. A piece of parchment.
4. Chemistry A thin sheet of natural or synthetic material that is permeable to substances in solution.
[Latin membrāna, skin, from membrum, member of the body.]
mem′bra·nal (-brə-nəl) adj.
1. any thin pliable sheet of material
2. (Biology) a pliable sheetlike usually fibrous tissue that covers, lines, or connects plant and animal organs or cells
3. (Biology) biology a double layer of lipid, containing some proteins, that surrounds biological cells and some of their internal structures
4. (Atomic Physics) physics a two-dimensional entity postulated as a fundamental constituent of matter in superstring theories of particle physics
5. (Historical Terms) a skin of parchment forming part of a roll
[C16: from Latin membrāna skin covering a part of the body, from membrum member]
1. a thin, pliable sheet or layer of animal or vegetable tissue, serving to line an organ, connect parts, etc.
2. any thin, pliable material used as a filter, separator, resonator, etc.
[1375–1425; late Middle English; Middle English membraan parchment < Latin membrāna. See member, -an1]
1. A thin, flexible layer of tissue that covers, lines, separates, or connects cells or parts of an organism. See cell membrane.
2. Chemistry A thin sheet of natural or synthetic material that is permeable to substances in solution.
A thin lining or layer.
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|Noun||1.||membrane - a thin pliable sheet of material|
|2.||membrane - a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants|
trophoblast - the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall; "after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta"
chorioallantoic membrane, chorioallantois - the very vascular fetal membrane composed of the fused chorion and adjacent wall of the allantois
web - membrane connecting the toes of some aquatic birds and mammals
Bowman's capsule, capsula glomeruli, glomerular capsule - thin double membrane surrounding the glomerulus of a nephron
animal tissue - the tissue in the bodies of animals
axolemma - outer membrane covering an axon
basilar membrane - a membrane in the cochlea that supports the organ of Corti
fetal membrane - any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
choroid, choroid coat - a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye
ciliary body - the part of the tunic of the eye between the choroid coat and the iris; "the ciliary body produces aqueous humor"
cornea - the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera
diaphragm, midriff - (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration
endocranium - membrane lining the inside of the skull
endosteum - vascular membrane that lines the inner surface of long bones
ependyma - thin epithelial membrane lining the ventricles of the brain and the spinal cord canal
fertilization membrane - the membrane that forms around a fertilized ovum and prevents penetration by additional spermatozoon
hyaloid, hyaloid membrane - the transparent membrane enveloping the vitreous humor of the eye and separating it from the retina
intima - the innermost membrane of an organ (especially the inner lining of an artery or vein or lymphatic vessel)
iris - muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye
lamella - a thin membrane that is one of the calcified layers that form bones
mucosa, mucous membrane - mucus-secreting membrane lining all body cavities or passages that communicate with the exterior
periosteum - a dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles; contains nerves and blood vessels that nourish the enclosed bone
perithelium - tissue layer around small blood vessels
retina - the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve
sarcolemma - an extensible membrane enclosing the contractile substance of a muscle fiber
semipermeable membrane - a membrane (as a cell membrane) that allows some molecules to pass through but not others
serosa, serous membrane - a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid
synovial membrane, synovium - a thin membrane in synovial (freely moving) joints that lines the joint capsule and secretes synovial fluid
phospholipid - any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base; an important constituent of membranes
membrane[ˈmembreɪn] N → membrana f
membrane[ˈmɛmbreɪn] n → membrane f
n → Membran(e) f
membrane[ˈmɛmbreɪn] n → membrana
a thin film or layer of tissue that covers or lines parts of the body, forms the outside of cells etc. membraan غِشاء، أغْشِيَه мембрана membrana membrána die Membran membran; hinde μεμβράνηmembrana kile, kelme پوسته kalvo membrane מֶמבּרָנָה झिल्ली membrane, opna hártya selaput himna membrana 膜 박막(薄膜) membrana, plėvelė, apvalkalas membrāna; plēve; apvalks membran vlieshinne, membranbłona پرده،پوښ،پوست membrana membrană оболочка; перепонка membrána membrana membrana membran, hinna เยื่อบุผิว zar, perde 薄膜 оболонка; пліва جھلی، غشا màng 薄膜
n. membrana, capa fina que sirve de cubierta o protección a una cavidad, estructura u órgano;
elastic ___ → ___ elástica;
mucous ___ → ___ mucosa;
nuclear ___ → ___ nuclear;
permeable ___ → ___ permeable;
placental ___ → ___ de la placenta;
semipermeable ___ → ___ semipermeable;
synovial ___ → ___ sinovial;
tympanic ___ → ___ timpánica.