from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Relating to, made of, or similar to a membrane.
  • adj. Pathology Characterized by the formation of a membrane or a layer similar to a membrane.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having the qualities of, or pertaining to, a membrane.
  • adj. Accompanying the formation of a membrane.
  • adj. Thin, pliable, and often transparent.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to, consisting of, or resembling, membrane.
  • adj. Membranaceous.

from The Century Dictionary and Cyclopedia

  • Having a membrane or membranes; membraniferous.
  • Consisting of membrane; having the texture or quality of a membrane; membranaceous.
  • Of or pertaining in any way to membrane; resembling membrane; membraniform.
  • In botany, having the character or appearance of membrane; thin, rather soft and pliable, and often more or less translucent, as sometimes leaves, the walls of seed-vessels, the indusia in ferns, etc. See phrases below.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. characterized by formation of a membrane (or something resembling a membrane)
  • adj. relating to or made of or similar to a membrane


from Wiktionary, Creative Commons Attribution/Share-Alike License

From French membraneux, from Latin membr─üneus.


  • Every little cell is surrounded by a thin membranous wall, like a soap bubble.

    The Nobel Prize in Physiology or Medicine 1991 - Presentation Speech

  • The _ligule_ is a thin short membranous ridge with

    A Handbook of Some South Indian Grasses

  • The greater portion of it is thick and muscular and constitutes the muscular ventricular septum, but its upper and posterior part, which separates the aortic vestibule from the lower part of the right atrium and upper part of the right ventricle, is thin and fibrous, and is termed the membranous ventricular septum.

    V. Angiology. 4b. The Heart

  • The mesoderm then extends over the brain-vesicles, and thus the entire brain is enclosed by a mesodermal investment, which is termed the membranous cranium.

    II. Osteology. 1. Development of the Skeleton

  • The cells of this layer proliferate rapidly, and extending medialward surround the notochord; at the same time they grow backward on the lateral aspects of the neural tube and eventually surround it, and thus the notochord and neural tube are enveloped by a continuous sheath of mesoderm, which is termed the membranous vertebral column.

    II. Osteology. 1. Development of the Skeleton

  • It was early admitted that certain cases of so-called membranous croup in children occurred after or while other members of the family or household had diphtheria; and for a time the opposing camps used such words as "sporadic" or scattered croup, which was supposed to come of itself, and "epidemic" or contagious croup, which was diphtheria.

    Preventable Diseases

  • The cloathing about the head should be warmer during sleep than in the day; because at that time people are more liable to take cold; that is, the membranous parts of it are more liable to become torpid.

    Zoonomia, Vol. II Or, the Laws of Organic Life

  • For instance, HCV NS4B remodels host membranes to form the so-called membranous web, the site for HCV genome replication.

    BioMed Central - Latest articles

  • "Treatment of idiopathic membranous nephropathy with the herb Astragalus membranaceus."

    Dr. Richard Palmquist: Using Herbs to Comfort Veterinary Cancer Patients

  • Its stony exoskeleton opened up, revealing a pair of brightly colored membranous wings.

    The Search For WondLa


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