cephalothorax Zool.
(ˌsɛfələʊˈθɔəræks)
[f. Gr. κεϕαλή head + thorax; see quot. 1835.]
The anterior division of the body, consisting of the coalesced head and thorax, in certain Arachnida and Crustacea (as common spiders and crabs).
| 1835 Kirby Hab. & Inst. Anim. The head and trunk..forming together what he [Latreille] names a cephalothorax. 1861 J. Blackwall Hist. Spiders I. Introd. 1 Spiders, with few exceptions, have a cephalo-thorax. 1880 Huxley Cray-Fish 19 The fore part is termed the Cephalothorax. |
Hence ˌcephalothoˈracic a.
| 1851 Richardson Geol. viii. 260 The King-Crabs..have the body covered with a large cephalo-thoracic shield. 1859 Todd Cycl. Anat. V. 299/1 The cephalo-thoracic division. |