craniometry (n.)

word-forming element meaning "of the skull," from Latinized combining form of Greek kranion "skull" (see cranium).

word-forming element meaning "process of measuring," Middle English -metrie, from French -metrie, from Latin -metria, from Greek -metria "a measuring of," from -metros "measurer of," from metron "measure," from PIE root *me- (2) "to measure."