/ Dictionary / Index C cephalothorax: Meaning and Definition of Find definitions for: ceph•a•lo•tho•rax Pronunciation: (sef"u-lō-thôr'aks, -thōr'-), [key] — pl. -tho•rax•es, -tho•ra•ces the anterior part of the body in certain arachnids and crustaceans, consisting of the coalesced head and thorax. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cephalosporin cephalous Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language