Medical Definition of Trabecula

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Trabecula: A partition which divides or partly divides a cavity.

  • One of the strands of connective tissue projecting into an organ that constitutes part of the framework of the organ as, for example, the trabeculae of the spleen.
  • One of a number of small interconnecting rods of bone making up a mass of spongy bone as, for example, the trabeculae within the skull.

The word "trabecula" is the diminutive of the Latin "trabes", a beam or plank of wood, as might be used in a supporting structure.

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Reviewed on 12/11/2018

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