from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A birth defect in which the head is absent
from The Century Dictionary and Cyclopedia
- n. In teratology, the absence of the head.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. absence of the head (as in the development of some monsters)
a- + -cephalia (Wiktionary)