solarium

[ suh-lair-ee-uh m, soh- ]

/ səˈlɛər i əm, soʊ- /

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.

Origin of solarium

1815–25; < Latin sōlārium balcony, terrace, equivalent to sōl the sun + -ārium -ary

She boasts 125 rooms, a heated indoor pool, sauna, Turkish bath, and solarium, as well as a lounge and piano bar.

Gal With a Suitcase |Jolie Hunt |January 31, 2010 |DAILY BEAST
We do not see any reason for separating this genus from Solarium, except the last mentioned character.

A Conchological Manual |George Brettingham Sowerby
Night was moving above her through the dome of the solarium.

Captives of the Flame |Samuel R. Delany
The hall range contains the Masters lodging with a solarium above it, a door and passage leading thence to the hall.

Cambridge |Mildred Anna Rosalie Tuker

When an upper apartment was carried out in stone it was described in deeds as solarium lapideum.

The Story of London |Henry B. Wheatley
Clive Hammond and his new wife were again together in the solarium.

Murder at Bridge |Anne Austin

solarium

/ (səʊˈlɛərɪəm) /

a room built largely of glass to afford exposure to the sun

a bed equipped with ultraviolet lights used for acquiring an artificial suntan

an establishment offering such facilities

C19: from Latin: a terrace, from sōl sun