prosomal


pro·so·ma

P0608200 (prō-sō′mə)n. The anterior of the two or three main divisions of the body of certain invertebrates, especially the cephalothorax of an arachnid.
[pro- + Greek sōma, body; see teuə- in Indo-European roots.]
pro·so′mal adj.

prosomal

(prəʊˈsəʊməl) adj (Zoology) relating to a prosoma