Planetarium

[,plænɪ'teərɪəm] or ['plænə'tɛrɪəm]

Definition

(noun.) an apparatus or model for representing the solar systems.

(noun.) an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome.

(noun.) a building housing an instrument for projecting the positions of the planets onto a domed ceiling.

Inputed by Doris--From WordNet

Definition

(n.) An orrery. See Orrery.

Inputed by Doris

Synonyms and Synonymous

n. Orrery.

Inputed by Erma