etaoin:
dol·i·cho·ce·phal·ic
Pronunciation Key (dl-k-s-flk) also dol·i·cho·ceph·a·lous (-sf-ls)
adj. Having a relatively long head with a cephalic index below 76.
[Greek dolikhos, long; see del-1 in Indo-European Roots + -cephalic.]doli·cho·cepha·lism (-sf-lzm) or doli·cho·cepha·ly (-sf-l) n.

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

AnnaS:
Greek is an IE language. AHD is simply pointing you back to the IE root (though why it didn't do the same for -cephalic I don't know).

Because the reference to dolikhos takes one to the etymological appendix, while the reference to -cephalic takes one to a separate dictionary entry.



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