Definition of cephalon in English:


Line breaks: ceph|alon
Pronunciation: /ˈsɛfəlɒn
, ˈkɛf-/


  • (In some arthropods, especially trilobites) the region of the head, composed of fused segments.
    More example sentences
    • This problem is reflected in the ongoing uncertainty about the number of biramous appendages in the trilobite cephalon.
    • This specimen cannot be specifically identified because it lacks the cephalon and first thoracic segment.
    • Members of the Agnostina have only two segments between the cephalon and pygidium, and never have cephalic sutures.


late 19th century: from Greek kephalē 'head'.

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