/ Dictionary / Index D dodecahedron: Meaning and Definition of Find definitions for: do•dec•a•he•dron Pronunciation: (dō-dek"u-hē'drun, dō"dek-), [key] — pl. -drons, -dra a solid figure having 12 faces. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dodecahedron (Thesaurus) dodecagon dodecanal Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language