solarium

/səˈlɛəɹ.i.əm/noun
Middle School
1

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

2

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

3

An earthen structure constructed by certain ants for the purpose of brood incubation.

4

Synonym of sundial.

Thesaurus

#archaic