Definition of cephalon in English:

cephalon

Syllabification: ceph·a·lon
Pronunciation: /ˈsefəˌlän, -lən
 
/

noun

Zoology
(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.

Origin

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

Definition of cephalon in:

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Pronunciation: nēˈätn-ē
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retention of juvenile features in the adult animal