thoraci-|θɒˈræsɪ|combining form of L. thōrāx, -ācem, in same sense as thoraco-. thoˈraciforma., having the form of a thorax, thorax-shaped. thoˈracipod[Gr. ποδ- foot]a., of or pertaining to the Thoracipoda, a division of crustaceans having ambulatory thoracic limbs; n. a crustacean of this division; so thoraˈcipodousa. (Cent.Dict. 1891). thoˌraciˈspinala., pertaining to the thoracic portion of the spinal column.1826Kirby & Sp.Entomol. IV. xlvi. 331 Orismology... Mesothorax{ddd}βDorsolum. *Thoraciform,..when it forms the principal part of the upper surface of the trunk.1887Coues in Cent.Dict., *Thoracispinal.1899Syd. Soc.Lex., Thoracispinal.