Main Entry: so·lar·i·um

Pronunciation: \sō-ˈler-ē-əm, sə-\

Function: noun

Inflected Form(s): plural -ia \-ē-ə\ also so·lar·i·ums

Etymology: Latin, porch exposed to the sun, from sol

Date: circa 1823

: a glass-enclosed porch or room; also : a room (as in a hospital) used especially for sunbathing or therapeutic exposure to light