Planetarium - definition, pronunciation, transcription

Amer.  |ˌplænɪˈteriəm|  American pronunciation of the word planetarium
Brit.  |ˌplanɪˈtɛːrɪəm|  British pronunciation of the word planetarium


- a building housing an instrument for projecting the positions of the planets onto a domed ceiling
- an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
- an apparatus or model for representing the solar systems


...the lecturer at the planetarium enlightened us about the latest astronomical discoveries...

...the planetarium's dazzling light show left my head swimmy with delight...

Word forms

singular: planetarium
plural: planetariums
See also:  WebsterWiktionaryLongman