cephalothorax

[ sef-uh-loh-thawr-aks, -thohr- ]

noun

, Zoology.

, plural ceph·a·lo·tho·rax·es, ceph·a·lo·tho·ra·ces [sef-, uh, -loh-, thawr, -, uh, -seez, -, thohr, -].

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

cephalothorax

/ ˌsɛfələʊˈθɔːræks; ˌsɛfələʊθəˈræsɪk /

noun

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

cephalothorax

/ sĕf′ə-lə-thôr′ăks′ /

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

Derived Forms

• cephalothoracic, adjective

Other Words From

• ceph·a·lo·tho·rac·ic [sef-, uh, -loh-th, uh, -, ras, -ik], adjective

Word History and Origins

Origin of cephalothorax¹

First recorded in 1825–35; cephalo- + thorax

Example Sentences

The cephalothorax is strongly chitinized, showing two small oval spots.

From Project Gutenberg

The small suboval area between the chitinized cephalothorax and the abdomen is soft with five chitinized plates.

From Project Gutenberg

Color of supposed Male—Cephalothorax and maxill, dark reddish brown.

From Project Gutenberg

Cephalothorax suboval, upper margin strongly concave at the sides and tapering to a point at the median line.

From Project Gutenberg

A delicate carapace covers the thorax; the abdomen is proportionately very large, often twice the length of the cephalothorax.

From Project Gutenberg