diploic

dip·lo·e

or dip·lo·ë  (dĭp′lō-ē′)

n.

The spongy, porous, bony tissue between the hard outer and inner bone layers of the cranium.

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[Greek diploē, a fold, doubling, from feminine of diploos, twofold; see dwo- in Indo-European roots.]

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dip′lo·ic (-lō-ĭk) adj.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

diploic

(dɪˈpləʊɪk)

adj

of or relating to diploë

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014