/ Dictionary / Index C caliginous: Meaning and Definition of Find definitions for: ca•lig•i•nous Pronunciation: (ku-lij'u-nus), [key] — adj. Archaic. misty; dim; dark. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: caliginous (Thesaurus) californium Caligula Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language