metasoma
From ZooTerms (Dictionary of Invertebrate Zoology)
metasoma (noun; Greek meta, after; soma, body): 1. The posterior region of many invertebrates.
2. (Acanthocephala) The posterior part of the body or trunk.
3. (Arthropoda) The abdomen or urosome.
4. (Arthropoda: Chelicerata) In Arachnida, the abdominal body segments and telson; posterior part of opisthosoma.
5. (Arthropoda: Crustacea) see metasome.
6. (Phoronida) The long gonadal region following the mesosoma, and bearing external papillae and chitinous attachment structures
See also: opisthosoma.
