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Webster 1913 Edition

Planetarium

Planˊe-ta′ri-um

,

Noun.

[NL.: cf. F.

planétaire

. See

.]

An orrery. See

.

Webster 1828 Edition

Planetarium

PLANETA'RIUM

,

Noun.

An astronomical machine which, by the movement of its parts, represents the motions and orbits of the planets, agreeable to the Copernican system.