/ Dictionary / Index C caudex: Meaning and Definition of Find definitions for: cau•dex Pronunciation: (kô'deks), [key] — pl. -di•ces -dex•es. the main stem of a tree, esp. a palm or tree fern. the woody or thickened persistent base of an herbaceous perennial. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: caudex (Thesaurus) caudate caudillo Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language