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'.

Definition of cephalon in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day oleaginous
Pronunciation: ˌōlēˈajənəs
rich in, covered with, or producing oil; oily