planetarium
[ plan-i-tair-ee-uh m ]
/ ˌplæn ɪˈtɛər i əm /
noun, plural plan·e·tar·i·ums, plan·e·tar·i·a [plan-i-tair-ee-uh] /ˌplæn ɪˈtɛər i ə/.
an apparatus or model representing the planetary system.
a device that produces a representation of the heavens by the use of a number of moving projectors.
the building or room in which such a device is housed.
Words nearby planetarium
Example sentences from the Web for planetarium
The dome was lighted to represent a clear night, and, incidentally, all nights are clear in a planetarium.
Astounding Stories, August, 1931 |VariousIngulfus mentions at the same time a nadir, as he calls it, or planetarium, executed in various metals.
In the school-room there was a planetarium, very neatly finished, set in motion by clock-work.
Travels Through North America, v. 1-2 |Berhard Saxe-Weimar EisenachThe planets are visible during the day in the planetarium as well as night.
Astounding Stories, August, 1931 |Various
British Dictionary definitions for planetarium
planetarium
/ (ˌplænɪˈtɛərɪəm) /
noun plural -iums or -ia (-ɪə)
an instrument for simulating the apparent motions of the sun, moon, and planets against a background of stars by projecting images of these bodies onto the inside of a domed ceiling
a building in which such an instrument is housed
a model of the solar system, sometimes mechanized to show the relative motions of the planets