solarium

plural solariums · plural solaria · alternative Solarium

1. CanadaUSA room, rooftop, balcony, or terrace, used for its abundant sunlight, especially when used as a medical treatment.

   My brother kept a health-lift a few years ago... and then he had a blue-glass solarium.

   1891, Edward Eggleston, The Faith Doctor, page 289

   2 more examples

   The solariums on the roofs of the houses of the ancient Greeks and Romans testify to the benefits obtained by them from sun baths.

   1894 September 20, The Voice

   The Greeks had their helioses and the Romans their solaria; yet heliotherapy has as yet scarcely emerged from the most empiric of performances into the dignity of a scientifically justified or rationalized procedure.

   1925, Hobart Amory Hare, Progressive Medicine, page 219

   Synonyms: sunroom

2. UKSynonym of tanning salon, a room or business used for its sunlamps or tanning beds.

   Synonyms: tanning salon

3. An earthen structure constructed by certain ants for the purpose of brood incubation.
4. archaicSynonym of sundial.

   […] this solarium being made for a different meridian […]

   1842, William Smith, A Dictionary of Greek and Roman Antiquity, page 487

   1 more example

   […] lifting his eyes from the solarium set under the aplustre for reference in keeping the course...

   1880, Lew Wallace, Ben-Hur, page 142

   Synonyms: sundial

1. A large monument in ancient Rome and its modern ruins.

   Synonyms: Horologium

2. historicalastronomyA former constellation located between the constellations of Horologium, Dorado, and Hydrus