trabecula
noun
tra·bec·u·la trə-ˈbe-kyə-lə 
plural trabeculae trə-ˈbe-kyə-ˌlē
-ˌlī
also trabeculas 1
: a small bar, rod, bundle of fibers, or septal membrane in the framework of a body organ or part
2
: a fold, ridge, or bar projecting into or extending from a plant part
especially : a row of cells bridging an intercellular space
trabecular
trə-ˈbe-kyə-lər
adjective trabeculate
trə-ˈbe-kyə-lət
adjective 
Word History
Etymology
New Latin, from Latin, little beam, diminutive of trabs, trabes beam
First Known Use
circa 1866, in the meaning defined at sense 1
Medical Definition
trabecula
noun
tra·bec·u·la trə-ˈbek-yə-lə
plural trabeculae -ˌlē also trabeculas
also trabeculas 1
: a small bar, rod, bundle of fibers, or septal membrane in the framework of a bodily organ or part (as the spleen)
2
: one of a pair of longitudinally directed more or less curved cartilaginous rods in the developing skull of a vertebrate that develop under the anterior part of the brain on each side of the pituitary gland and subsequently fuse with each other and with the parachordal cartilages to form the base of the cartilaginous cranium
3
: any of the intersecting osseous bars occurring in cancellous bone