/seuh lair"ee euhm, soh-/ , n. , pl. solariums, solaria /-lair"ee euh/ .
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.
[ 1815-25; solarium balcony, terrace, equiv. to sol the sun + -arium -ARY ]