D defs.my
Entry 2 senses Webster, 1913

Solarium

· So·la·ri·um · IPA /səˈlɛəɹ.i.əm/
01 n. 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 hos…
pl. Solaria ((#))
  1. 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. 2.
    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.(Zool.) Also: perspective shell