Also spelled cephalo-thorax
noun
Meanings
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1
noun
the fused head and thorax forming the front body region of spiders, crustaceans, and some other arthropods
The crab's legs and claws attach to its hard cephalothorax.
Thesaurus
Etymology
Formed from cephalo-, 'head,' + thorax. Zoologists use the compound for an arthropod body region in which the head and thoracic segments are joined rather than externally separate.