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单词 membrane
释义

Definition of membrane in English:

membrane

noun ˈmɛmbreɪnˈmɛmˌbreɪn
Anatomy Zoology
  • 1A thin sheet of tissue or layer of cells acting as a boundary, lining, or partition in an organism.

    the nucleus is a distinct region with a membrane around it
    with modifier the mucous membrane
    Example sentencesExamples
    • Our brains are literally made of fat and our nerves are sheathed in thin membranes of it.
    • Fibers in the wing membrane added structural support and stiffness.
    • Carefully slice away the thin membrane which covers the monkfish tail, to reveal the firm white meat.
    • Structurally it is a membrane surrounding the heart, and physiologically it protects the heart.
    • Osmosis is important in food preparation because the cell walls of living organisms are semipermeable membranes.
    Synonyms
    layer, laminate, sheet, skin, film, veil, diaphragm, partition, drum, tissue, pellicle, integument, overlay, covering, coat
    1. 1.1 A thin pliable sheet of material forming a barrier or lining.
      the concrete should include a membrane to prevent rising damp
      Example sentencesExamples
      • Because of surface tension, the water does not fall out of the tiny hole, although a thin membrane may be added, just to be safe.
      • The cost of labor is virtually the same as for the thinner membrane, but puncture resistance is greatly enhanced.
      • The ridge of the roof is a water channel from which water overflows onto the thin roofing membrane of stone and glass.
      • The process involves forcing water through very fine membranes small enough to trap molecules of pollutants, but large enough to allow the water to pass.
      • So many layers of colour have been piled on the canvas that a rubbery membrane of paint hangs over the sharp edges of the frame.
      Synonyms
      layer, laminate, sheet, skin, film, veil, diaphragm, partition, drum, tissue, pellicle, integument, overlay, covering, coat
    2. 1.2Biology A microscopic double layer of lipids and proteins forming the boundary of cells or organelles.
      Example sentencesExamples
      • Although there are, as far as is known, no quantitative data, hydrogen peroxide is usually thought to move rapidly across the membranes of cells and organelles.
      • The interaction of electric fields with lipid membranes and cells has been extensively studied in the last decades.
      • The lateral organization and dynamics of lipids and proteins in membranes is critical to many cellular processes.
      • Other organelles have double membranes, consisting of two phospholipid bilayers.
      • This phospholipid bilayer is the fundamental structure of all biological membranes.

Derivatives

  • membranaceous

  • adjective mɛmbrəˈneɪʃəsˌmɛmbrəˈneɪʃəs
    Anatomy Zoology
    • Extending from the stem to the margin of the cap, and covering the gills, is the partial veil - a membranaceous, white texture of varying thickness.
      Example sentencesExamples
      • A closely related plant, S. jamaicensis, which has darker blue-mauve flowers and fleshy rather than membranaceous leaves, grows in the Northern Territory and probably also occurs in the Kimberley.
      • Astragalus membranaceous ranks as one of the most potent health tonics in the world.
      • Above the pectoral is a long membranaceous scale equalling, or very nearly, the fin itself.
      • Evergreen leaves are usually coriaceous, while deciduous leaves are usually membranaceous or chartaceous.
  • membraneous

  • adjective mɛmˈbreɪnɪəs
    Anatomy Zoology
    • The ‘paala’ is non-absorbent, has a membraneous coating and could be used as an eco-friendly substitute for plastic glasses and vessels.
      Example sentencesExamples
      • Each flower, surrounded by a thin membraneous sheath, topped a short pedicel that elongated during the last stages of flower development up to anthesis.
      • Autopsy has revealed edema in the membraneous labyrinth so that it is always a good idea to eliminate salt from the diet as it can aggravate conditions of edema and fluid retention.
      • In the organelles membraneous structures almost completely disappeared; however, some wavy membrane remnants could still be present beside one or two linear membranes lying under the external envelope.
      • Cucullus also shares some features with Sinospongia: both have a membraneous, tubular or sac-like construction.
  • membranous

  • adjective ˈmɛmbrənəsˈmɛmbrənəs
    Anatomy Zoology
    • Somewhere further away, a tail tipped in membranous, half-transparent white fin violently flailed in the water, rippling all the way up to where Po had shot her arrow.
      Example sentencesExamples
      • The baby is receiving emergency treatment on an extra-corporeal membranous oxygenation machine, to help him breathe.
      • They're huge white maggots with transparent membranous skin.
      • Mitochondria are membranous sacs with membranous partitions to which enzymes may be tightly or loosely bound and which are themselves integral component parts of the organelle.
      • Both dragonflies and damselflies have two pairs of elongated membranous wings with a strong crossvein and many small veins that criss-cross in the wings, adding strength and flexibility to the wings.

Origin

Late Middle English: from Latin membrana, from membrum 'limb'.

 
 

Definition of membrane in US English:

membrane

nounˈmɛmˌbreɪnˈmemˌbrān
Anatomy Zoology
  • 1A thin sheet of tissue or layer of cells acting as a boundary, lining, or partition in an organism.

    Example sentencesExamples
    • Osmosis is important in food preparation because the cell walls of living organisms are semipermeable membranes.
    • Structurally it is a membrane surrounding the heart, and physiologically it protects the heart.
    • Carefully slice away the thin membrane which covers the monkfish tail, to reveal the firm white meat.
    • Fibers in the wing membrane added structural support and stiffness.
    • Our brains are literally made of fat and our nerves are sheathed in thin membranes of it.
    Synonyms
    layer, laminate, sheet, skin, film, veil, diaphragm, partition, drum, tissue, pellicle, integument, overlay, covering, coat
    1. 1.1 A thin pliable sheet of material forming a barrier or lining.
      the concrete should include a membrane to prevent water seepage
      Example sentencesExamples
      • The cost of labor is virtually the same as for the thinner membrane, but puncture resistance is greatly enhanced.
      • The process involves forcing water through very fine membranes small enough to trap molecules of pollutants, but large enough to allow the water to pass.
      • Because of surface tension, the water does not fall out of the tiny hole, although a thin membrane may be added, just to be safe.
      • The ridge of the roof is a water channel from which water overflows onto the thin roofing membrane of stone and glass.
      • So many layers of colour have been piled on the canvas that a rubbery membrane of paint hangs over the sharp edges of the frame.
      Synonyms
      layer, laminate, sheet, skin, film, veil, diaphragm, partition, drum, tissue, pellicle, integument, overlay, covering, coat
    2. 1.2Biology A microscopic double layer of lipids and proteins that bounds cells and organelles and forms structures within cells.
      Example sentencesExamples
      • Although there are, as far as is known, no quantitative data, hydrogen peroxide is usually thought to move rapidly across the membranes of cells and organelles.
      • This phospholipid bilayer is the fundamental structure of all biological membranes.
      • Other organelles have double membranes, consisting of two phospholipid bilayers.
      • The lateral organization and dynamics of lipids and proteins in membranes is critical to many cellular processes.
      • The interaction of electric fields with lipid membranes and cells has been extensively studied in the last decades.

Origin

Late Middle English: from Latin membrana, from membrum ‘limb’.

 
 
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更新时间:2024/11/11 5:05:04