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

  • n. A small supporting beam or bar.
  • n. Anatomy Any of the supporting strands of connective tissue projecting into an organ and constituting part of the framework of that organ.
  • n. Any of the fine spicules forming a network in cancellous bone.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A small supporting beam.
  • n. A small mineralized spicule that forms a network in spongy bone.
  • n. A fibrous strand of connective tissue that supports it in place.

from the GNU version of the Collaborative International Dictionary of English

  • n. A small bar, rod, bundle of fibers, or septal membrane, in the framework of an organ part.

from The Century Dictionary and Cyclopedia

  • n. In botany, one of the projections from the cell-wall which extend like a cross-beam or cross-bar nearly or quite across the cell-cavity of the ducts of certain plants, or the plate of cells across the cavity of the sporangium of a moss.
  • n. plural In anatomy, the fibrous cords, layers, or processes of connective tissue which ramify in the substance of various soft organs, as the spleen, kidney, or testicle, conferring upon them greater strength, stability, or consistency.
  • n. In embryology, one of a pair of longitudinal cartilaginous bars, at the base of the skull, in advance of the end of the notochord and of the parachordal cartilage, inclosing the pituitary space which afterward becomes the sella turcica; in the human embryo, one of the lateral trabecules of Rathke.
  • n. One of the calcareous plates or pieces which connect the dorsal and ventral walls of the corona in echinoderms.
  • n. One of the fleshy columns, or columnæ carneæ, in the ventricle of the heart, to which the chordæ tendineæ are attached: more fully called trabecula carnea.
  • n. In entomology, one of the pair of movable appendages on the head, just in front of the antennæ, of some mallophagous insects, or bird-lice, as those of the genus Docophorus. They have been supposed to represent the rudiments of a second pair of antennæ. Also trabeculus.

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

  • n. rod-shaped structures of fibrous tissue that divide an organ into parts (as in the penis) or stabilize the structure of an organ (as in the spleen)


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

Latin trabēcula, diminutive of trabs, trab-, beam.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin trabēcula ("small beam"), diminutive of trabs ("beam, timber").


  • The medial liver trabecula into which the enteron was seen to open, in the preceding figure, now opens ventrally to the yolk-sac as the anterior intestinal portal.

    Development of the Digestive Canal of the American Alligator

  • Osteoblasts and osteoclasts on trabecula of lower jaw of calf embryo.

    Illustrations. Fig. 81

  • Its spongy, interconnected cells match the natural bone trabecula structure, thereby allow integration into the surrounding viable bone. Press Releases

  • Grapsoidae, the closest agreement prevails in all the essential conditions of their structure; if the same plan of structure is slavishly followed in everything else, in the organs of sense, in the articulation of the limbs, in every trabecula and tuft of hairs in the complicated framework of the stomach, and in all the arrangements subserving aquatic respiration, even to the hairs of the flagella employed in cleaning the branchiae, -- why have we suddenly this exception, this complete difference, in connection with aerial respiration?

    Facts and Arguments for Darwin

  • 81– Osteoblasts and osteoclasts on trabecula of lower jaw of calf embryo.

    II. Osteology. 2. Bone

  • t., trabecular part of brain box. t.c., h., thyrohyal.

    Text Book of Biology, Part 1: Vertebrata


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