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cephalon: meaning, definition, pronunciation and examples

Rare/Technical
UK/ˈsɛfəlɒn/US/ˈsɛfəˌlɑːn/

Scientific, Technical, Specialist

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Quick answer

What does “cephalon” mean?

The head or head segment of an arthropod, especially a trilobite.

Audio

Pronunciation

Definition

Meaning and Definition

The head or head segment of an arthropod, especially a trilobite.

In biology and paleontology, the anterior segment of arthropods, particularly trilobites, containing the brain and sensory organs. Sometimes used poetically or humorously in science fiction for a robotic or alien head.

Dialectal Variation

British vs American Usage

Differences

No significant differences. Usage is identical in both scientific communities.

Connotations

Purely technical and descriptive; carries no additional cultural connotations in either variety.

Frequency

Extremely rare in both varieties. Its frequency is limited to specific scientific texts and discussions.

Grammar

How to Use “cephalon” in a Sentence

The [adjective] cephalon of the [arthropod] was preserved.Scientists examined the [noun] on the cephalon.

Vocabulary

Collocations

strong
trilobite cephalonfossilized cephaloncephalon morphologydamaged cephalon
medium
shape of the cephalonstudy the cephaloncephalon and thorax
weak
large cephaloncomplete cephalonancient cephalon

Examples

Examples of “cephalon” in a Sentence

adjective

British English

  • The cephalic shield was distinct.
  • Cephalic appendages were visible.

American English

  • The cephalic region was well-defined.
  • Cephalic morphology was key to identification.

Usage

Meaning in Context

Business

Never used.

Academic

Used in zoology, paleontology, and evolutionary biology papers and textbooks.

Everyday

Virtually never used. Would confuse most listeners.

Technical

The primary domain of use. Essential terminology for describing trilobite fossils and arthropod anatomy.

Vocabulary

Synonyms of “cephalon”

Strong

head regionanterior tagma

Neutral

head (in non-specialist contexts)

Weak

front segmentfrontal section

Vocabulary

Antonyms of “cephalon”

pygidium (the posterior segment of a trilobite)abdomenthorax (in some arthropod contexts)

Watch out

Common Mistakes When Using “cephalon”

  • Pronouncing it as /keɪˈfælən/ or /sɛˈfælən/.
  • Using it in everyday conversation.
  • Misspelling as 'cephalion' or 'kephalon'.

FAQ

Frequently Asked Questions

No, it is a rare and highly specialised scientific term. The average English speaker will not know it.

The standard plural is 'cephalons', but in scientific Latin context, 'cephala' is also sometimes used.

No, that would be incorrect and sound very strange. It refers specifically to the head segment of certain arthropods.

In trilobite anatomy, the opposite end is the 'pygidium', which is the tail plate.

The head or head segment of an arthropod, especially a trilobite.

Cephalon is usually scientific, technical, specialist in register.

Cephalon: in British English it is pronounced /ˈsɛfəlɒn/, and in American English it is pronounced /ˈsɛfəˌlɑːn/. Tap the audio buttons above to hear it.

Learning

Memory Aids

Mnemonic

Think of a SEF (like 'chef') with a helmet on his head. 'SEF-a-lon' protects the head of an ancient creature.

Conceptual Metaphor

HEAD AS A SHIELD/DOMAIN (the cephalon is often described as a shield-like structure protecting the brain).

Practice

Quiz

Fill in the gap
In trilobite taxonomy, the shape and ornamentation of the are highly diagnostic.
Multiple Choice

In which field is the word 'cephalon' most commonly used?