Jisho

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しんくう 真空
Common word JLPT N2 Links
Na-adjective (keiyodoshi), Noun
1. vacuum; hollow; empty​
Wikipedia definition
2. Vacuum​Vacuum is space that is empty of matter. The word stems from the Latin adjective vacuus for "empty". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space.
Read “Vacuum” on English Wikipedia
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