(hem″e-kra´ne-ә) headache on one side of the head. a developmental anomaly consisting of absence of half of the cranium. Found on http://www.encyclo.co.uk/local/21001
Hem`i·cra'ni·a noun [ Latin : confer French hémicrânie . See Cranium , and Megrim .] (Medicine) A pain that affects only one side of the head. Found on http://www.encyclo.co.uk/webster/H/31