solarium Meaning, Definition & Usage

  1. noun a room enclosed largely with glass and affording exposure to the sun
    sunroom; sun parlor; sun lounge; sun parlour; sun porch; sunporch.

WordNet

So*la"ri*um noun
Etymology
L. See Solar, n.
Wordforms
plural Solaria
Definitions
  1. An apartment freely exposed to the sun; anciently, an apartment or inclosure on the roof of a house; in modern times, an apartment in a hospital, used as a resort for convalescents.
  2. (Zoöl.) Any one of several species of handsome marine spiral shells of the genus Solarium and allied genera. The shell is conical, and usually has a large, deep umbilicus exposing the upper whorls. Called also perspective shell.

Webster 1913