solarium

• n. 日光浴室；日晷

solar,太阳的，-ium,表地方，词源同 aquarium.

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).