Hypertext Webster Gateway: "Solaria"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Solarium \So*la"ri*um\, n.; pl. {Solaria}. [L. See {Solar}, n.]
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. (Zo["o]l.) 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}.
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