dip·lo·e or dip·lo·ë (dĭplō-ē′)
The spongy, porous, bony tissue between the hard outer and inner bone layers of the cranium.
[Greek diploē, a fold, doubling, from feminine of diploos, twofold; see dwo- in the Appendix of Indo-European roots.]
diplo·ic (-lō-ĭk) adj.
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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:
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