thoracic regions

pl. Anat.: Fourteen regions into which the thorax in man is divided by imaginary straight lines, longitudinal and transverse, so that the exact situation of any spot may be described. [ABDOMINAL.) tho-răç-I-ca, s. pl. [Mod. Lat., from Lat. tho rax (q. v.).] Zool.: An order of Cirriped i a. Carapace either a capitulum or a pedicle, or an operculated shell with a basis. Body formed of six thoracic seg ments, generally furnished with six pairs of limbs; abdomen rudimentary, but often bearing caudal appendages. Families: Balanide, Verrucide, and Lepadide. *tho-răç'-1-çi, s . pl . [Mod. Latin, from thorax (q. v.).] Ichthy.: A Linnean group of Fishes ( System a , ed. 12th), having the ventral fins inserted on the abdominal surface below the pectorals.