Definition of mesosoma in English:

mesosoma

noun

Zoology
  • The middle section of the body in various invertebrates that have a body divided into three distinct sections (e.g. hemichordates, lophophorates, insects, etc.).

Origin

Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From meso- + ancient Greek σῶμα body, after metasoma and prosoma.

Pronunciation

mesosoma

/mɛsə(ʊ)ˈsəʊmə/