Longman Dictionary of Contemporary English homepage

Topic: CLEANING

Date: 1500-1600
Language: Latin
Origin: vacuus; VACUOUS

vacuum

1 noun
     
vac‧u‧um1
1 [countable]HP a space that is completely empty of all gas, especially one from which all the air has been taken away
2 [countable]DHC a vacuum cleaner
3 [singular] a situation in which someone or something is missing or lacking
create/leave a vacuum (in something)
Her husband's death left a vacuum in her life.
power/political/moral etc vacuum
the political vacuum caused by the ban on Communist Party activity
4

in a vacuum

existing completely separately from other people or things and having no connection with them:
The process of learning a language does not take place in a vacuum.
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