the anterior part of the body in certain arachnids and crustaceans, consisting of the coalesced head and thorax.
noun (pl) -raxes, -races (-rəˌsiːz)
the anterior part of many crustaceans and some other arthropods consisting of a united head and thorax
1829, from cephalo- + thorax. Perhaps from French or German.
The combined head and thorax of arachnids, such as spiders, and of many crustaceans, such as crabs.
having a head. a combining form meaning “having a head or heads” of the specified sort or number: brachycephalous. -cephalous suff. Having a specified kind of head or number of heads: nanocephalous.
the husband of Procris. Historical Examples
a combining form of nouns that correspond to adjectives ending in -cephalic, or -cephalous: dolichocephaly. -cephaly suff. A specified condition affecting the head: microcephaly.
- Cephapirin sodium
cephapirin sodium ceph·a·pi·rin sodium (sěf’ə-pī’rĭn) n. A semisynthetic broad-spectrum antibiotic derived from cephalosporin, usually administered by injection.