/ Dictionary / Index S solarium: Meaning and Definition of Find definitions for: so•lar•i•um Pronunciation: (su-lâr'ē-um, sō-), [key] — pl. -lar•i•ums, -lar•i•a a glass-enclosed room, porch, or the like, exposed to the sun's rays, as at a seaside hotel or for convalescents in a hospital. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: solarium (Thesaurus) solarism solarize Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language