vacuum ( vacuums plural & 3rd person present) ( vacuuming present participle) ( vacuumed past tense & past participle )
1 n-count If someone or something creates a vacuum, they leave a place or position which then needs to be filled by another person or thing.
usu sing, oft supp N
His presence should fill the power vacuum which has been developing over the past few days.
2 If something is done in a vacuum, it is not affected by any outside influences or information.
in a vacuum phrase PHR after v
Moral values cannot be taught in a vacuum...
3 verb If you vacuum something, you clean it using a vacuum cleaner.
I vacuumed the carpets today... V n
It's important to vacuum regularly. V
4 n-count A vacuum is a space that contains no air or other gas. usu sing
vacuum bottle ( vacuum bottles plural ) A vacuum bottle is the same as a vacuum flask.
vacuum cleaner ( vacuum cleaners plural ) , vacuum-cleaner A vacuum cleaner or a vacuum is an electric machine which sucks up dust and dirt from carpets. n-count
vacuum flask ( vacuum flasks plural ) A vacuum flask is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin silvery glass walls with a vacuum between them.
in AM, usually use Thermos, vacuum bottle
Food that is vacuum-packed is packed in a bag from which most of the air has been removed, in order to keep the food fresh. adj