epactal
adjective
epac·tal
\(ˈ)ē¦paktəl, (ˈ)e¦p-, ə̇ˈp-\
Definition of epactal
of a bone
: occurring irregularly in the sutures of the skull — compare wormian bone
From the M-W Editors
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Origin and Etymology of epactal
probably from French épactal, from Greek epaktos + French -al
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