CEPHALOTHORAX Meaning of CEPHALOTHORAX in English [ ˌsɛf(ə)ləʊ'θɔ:raks , ˌkɛf- ]■ noun ( plural cephalothoraces -'θɔ:rəsi:z or ~es ) Zoology the fused head and thorax of spiders and other chelicerate arthropods. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004