Plural of cephalad or a medical term referring to structures or directions related to the head.
From Greek kephale meaning 'head' with the suffix -adia. This is primarily a medical/anatomical term used in historical or formal scientific texts.
In medical terminology, 'ceph-' words (from Greek for head) are everywhere—cephalgia is headache, cephalopod is an animal with tentacles around its head, and cephalia refers to anything head-related. It's how anatomy students learn Greek through their textbooks!
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