Definition of vacuum in English:
noun (plural vacuums or vacua /-jʊə/)
1A space entirely devoid of matter.
- Since by definition it contains no matter, the vacuum of space itself has NO temperature.
- They operate like any rocket engine in the vacuum of space, by propelling gases in one direction to create an opposite and equal force on the craft.
- I am curious as to exactly when scientists found out that space is a vacuum and not made up of ether?
1.1A space or container from which the air has been completely or partly removed.
- The chamber was then put into a vacuum overnight to remove any remaining trace of organic solvent.
- After venting to release the vacuum, he removed the detector flange.
- He creates a vacuum in a glass container, and places one atom of carbon into it.
1.2 [usually in singular] A gap left by the loss, death, or departure of someone or something significant: the political vacuum left by the death of the Emperor
More example sentences
- The vacuum created by their departure was filled by the club's most committed supporters, who set about raising money and bringing the club back from the brink.
- The vacuum created by his death 24 years back still remains unfilled.
- In rural Scotland the retiral of a sitting MP always creates a vacuum which other political parties rush to fill.
2 (plural vacuums) A vacuum cleaner.
- It would be another ten years before the electric vacuum, iron, and frying pan became available as consumer products.
- Distractions such as rattles, music, or even running a vacuum, washing machine, or blow-dryer may be amusing or comforting to your baby.
- This is a combination stick and handheld (dust buster style) vacuum and is proving to be perfect for my small apartment.
verb[with object] Back to top
Clean with a vacuum cleaner: the room needs to be vacuumed
More example sentences
- I was sick of being the only one who vacuumed common areas, cleaned the bath and toilet or did a load of dishes without quibbling whether I'd eaten off them.
- Kids don't care if the room has been vacuumed and cleaned.
- Apparently while I've been at work my son has cleaned up the house, even vacuuming it!
in a vacuum
- (Of an activity or a problem to be considered) isolated from the normal context in which it can best be understood or assessed: professional training cannot take place in a vacuumMore example sentences
- We cannot exist in a vacuum, in isolation from what's happening in other parts of the world.
- All this artistic and scientific activity did not, of course, take place in a vacuum.
- While the film may be primarily an artistic statement, it does not exist like so much art, in a vacuum, but is placed firmly in context.
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