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atmospherium

[ at-muhs-feer-ee-uhm ]
/ ˌæt məsˈfɪər i əm /
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noun, plural at·mos·pher·i·a [at-muhs-feer-ee-uh]. /ˌæt məsˈfɪər i ə/.

an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
a building in which this projection system is used.

QUIZZES

QUIZ YOURSELF ON “ITS” VS. “IT’S”!

Apostrophes can be tricky; prove you know the difference between it’s and its in this crafty quiz!
Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of atmospherium

First recorded in 1955–60; atmospher(e) + (planetar)ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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