真空(しんくう)

しんくう
noun
vacuum
science
1. vacuum
A space entirely devoid of matter, or a space with greatly reduced air pressure.
宇宙(うちゅう)は真空(しんくう)の状態(じょうたい)だ。
Space is in a vacuum state.
真空(しんくう)パックで食品(しょくひん)を保存(ほぞん)する。
I preserve food in vacuum packs.
真空パック is a common compound
真空(しんくう)状態(じょうたい)では音(おと)が伝(つた)わらない。
Sound doesn't travel in a vacuum.

Compounds

  • 真空(しんくう)パック: vacuum pack; vacuum-packed food
  • 真空(しんくう)管(かん): vacuum tube
  • 真空(しんくう)状態(じょうたい): vacuum conditions
  • 真空(しんくう)地帯(ちたい): a vacuum, a gap where something is missing (a power vacuum)

Usage

In everyday speech 真空(しんくう) usually means near-vacuum conditions, as in vacuum-packed food; a perfect vacuum is a physics concept.

Related Words

Related: 魔法瓶(まほうびん) (thermos)
general
Added 2026.1.13 22:58 · Revised 2026.10.18 21:42
04000/04174_shinkuu