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planetarium

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

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Word of the Day

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    Idiom of the Day

    uptight
    to be worried or irritated or anxious
    My sister is very uptight because of her exams.



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