| Solarium 1. (n.) An apartment freely exposed to the sun; anciently, an apartment or enclosure on the roof of a house; in modern times, an apartment in a hospital, used as a resort for convalescents. 2. (n.) Any one of several species of handsome marine spiral shells of the genus Solarium and allied genera. The shell is conical, and usually has a large, deep umbilicus exposing the upper whorls. Called also perspective shell. Thesaurus Entries best room, drawing room, foreroom, front room, gallery, lanai, living room, parlor, patio, piazza, porch, salon, saloon, sitting room, sleeping porch, stoop, sun parlor, sun porch, sunroom, veranda |