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prosoma Syllabification: pro·so·ma
Pronunciation: /prōˈsōmə/

Definition of prosoma in English:

noun (plural prosomas or prosomata-mətə)

Another term for cephalothorax.
Example sentences
  • Similarly, in spiders there is a common posterior boundary for five of the anteriorly expressed Hox genes coinciding with the division between the two body tagma, the prosoma and opisthosoma.
  • Chelicerates are characterized by a pair of chelate preoral appendages and a body divided into two tagmata, the prosoma and opisthosoma.
  • The chelicerate body plan is characterized by two tagmata, the prosoma, including head structures, and the opisthosoma.


Late 19th century: from pro-2 'before' + Greek sōma 'body'.

Definition of prosoma in:
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