from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The spongy, porous, bony tissue between the hard outer and inner bone layers of the cranium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The thin layer of soft, spongy or cancellate tissue between the bone plates which constitute the skull.
from the GNU version of the Collaborative International Dictionary of English
- n. The soft, spongy, or cancellated substance between the plates of the skull.
from The Century Dictionary and Cyclopedia
- n. In anatomy, the light spongy substance or open cancellated or reticulated structure of bone between the hard dense inner and outer tables of the cranial bones.
- n. In botany, the parenchyma of a leaf, lying between the two epidermal surfaces. Also called meditullium.
Greek diploē, a fold, doubling, from feminine of diplous, twofold; see dwo- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
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