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planetarium
[ plan-i-tair-ee-uhm ]
noun
, plural plan·e·tar·i·ums, plan·e·tar·i·a [plan-i-, tair, -ee-, uh].
- 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.
planetarium
/ ˌplænɪˈtɛərɪəm /
noun
- 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
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Word History and Origins
Origin of planetarium1
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Example Sentences
Ingulfus mentions at the same time a nadir, as he calls it, or planetarium, executed in various metals.
From Project Gutenberg
It no doubt corresponded in a great measure to our modern planetarium, or orrery, invented by the earl of that name.
From Project Gutenberg
Here also was born the ingenious Eisa Eisinga, who constructed the Franeker planetarium in the intervals of wool-combing.
From Project Gutenberg
The dome was lighted to represent a clear night, and, incidentally, all nights are clear in a planetarium.
From Project Gutenberg
OrreryA planetarium; an instrument showing the relative motions, positions and masses of the sun and planets.
From Project Gutenberg
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