solarium
n.
1891, "part of a house arranged to receive the sun's rays," earlier "sundial" (1842), from Latin solarium "sundial," also "a flat housetop," literally "that which is exposed to the sun," from sol "sun" (see sol).
〔李〕[sol;-ariumn.] n.日光浴室； 太阳钟，日晷 ←sol (L sol)=the sun 太阳
〔蒋〕[sol太阳，-arium名词后缀，表示场所] 日光浴窒，日光治疗室