cephalothorax

American  

[sef-uh-loh-thawr-aks, -thohr-] / ˌsɛf ə loʊˈθɔr æks, -ˈθoʊr- /

noun

Zoology.

plural

cephalothoraxes, cephalothoraces

1. the anterior part of the body in certain arachnids and crustaceans, consisting of the coalesced head and thorax.

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cephalothorax British  

/ ˌsɛfələʊθəˈræsɪk, ˌsɛfələʊˈθɔːræks /

noun

1. the anterior part of many crustaceans and some other arthropods consisting of a united head and thorax

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cephalothorax Scientific  

/ sĕf′ə-lə-thôr′ăks′ /

1. The combined head and thorax of arachnids, such as spiders, and of many crustaceans, such as crabs.

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Other Word Forms

• cephalothoracic
  adjective

Etymology

Origin of cephalothorax

First recorded in 1825–35; cephalo- + thorax

Example Sentences

Male: Cephalothorax yellowish, with about fifty small reddish-brown spots scattered over surface, from each of which arises a short, but very stout spine; the marginal seam is reddish.

From New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642 by Banks, Nathan

Cephalothorax pale, with black median mark, wider at head; sternum reddish or yellowish.

From New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642 by Banks, Nathan

Cephalothorax, legs, sternum, mandibles, and palpi whitish; tarsi, and sometimes metatarsi, slightly infuscated; sternum sometimes more yellowish, no markings.

From New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642 by Banks, Nathan

Cephalothorax dull yellowish, a marginal dark seam, eyes on black spots; mandibles dull yellowish.

From New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642 by Banks, Nathan

Male: Cephalothorax, palpi, sternum, and most of legs yellowish; abdomen dark brown; metatarsi dark, tibiæ infuscated; mandibles reddish brown; tips of male palpi dark.

From New West Indian Spiders Bulletin of the AMNH, Vol. XXXIII, Art. XLI, pp. 639-642 by Banks, Nathan