n. pl. tra·bec·u·lae (-lē′)
1. Any of the supporting strands of connective tissue projecting into an organ and constituting part of the framework of that organ.
2. Any of the fine spicules forming a network in cancellous bone.
[Latin trabēcula, little beam or bar, diminutive of trabs, trab-, beam; see treb- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.