noun (usually in plural trabeculae /-lē/)
1 Anatomy Each of a series or group of partitions formed by bands or columns of connective tissue, especially a plate of the calcareous tissue forming cancellous bone.
- The cistern is traversed by delicate connective tissue trabeculae, which bridge across the interval between the arachnoid mater and the pia mater.
- In such calculations, however, bone matrix is usually approximated as an isotropic material, and anisotropic mechanical properties result from a preferred orientation of the trabeculae in cancellous bone.
- Histologic study demonstrated a fibro-osseous lesion with woven bone trabeculae and bland-looking fibrous tissue.
2 Botany Any of a number of rodlike structures in plants, e.g., a strand of sterile tissue dividing the cavity in a sporangium.
- No dots can be detected in the vacuoles but the tonoplast and the transvacuolar trabeculae of cytoplasm are labelled demonstrating that actin is present at this level.
- Special attention was paid to the structure and pattern of the distribution of septal trabeculae.
- Locally there are ‘hints’ of a parallel fibrous, possibly spicular, structure in the normally irregularly crystalline microstructure of the trabeculae.
- Example sentences
- With a dental curette, the trabecular bone was scraped out of both cortical shells, combined and put into 5% trichloroacetic acid.
- Furthermore, no immunostained cells are detectable even in the solid and trabecular patterns within some canalicular adenomas, again contrasting with the basal cell adenoma variants with similar patterns.
- The spongy appearance is misleading, because careful examination of the architecture reveals a highly organized trabecular system providing maximal structural support with minimal density of bony tissue.
- Example sentences
- The teeth are equally thickened and less prominently trabeculate on both adaxial and abaxial sides.
- Octoblepharum cylindricum differs from O. albidum by its longer setae, cylindrical capsules, entire leaf apices, and strongly trabeculate peristome teeth.
- The capsule lacks stomata and on the outside has a trabeculate appearance due to the outermost cells having thickened lateral walls.
Mid 19th century: from Latin, diminutive of trabs 'beam, timber'.
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