Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “vacuum”

vacuum

noun uk   /ˈvæk.juːm/ us  

vacuum noun (EMPTY SPACE)

[C or U] a space from which most or all of the matter has been removed, or where there is little or no matter [S] a lack of something: The withdrawal of troops from the area has created a security vacuum which will need to be filled. in a vacuum kept separate from other people and activities: No artist works in a vacuum - we are all of us influenced by others.

vacuum noun (CLEANER)

[C] a vacuum cleaner

vacuum

verb [I or T] uk   /ˈvæk.juːm/ (UK also hoover) us  
to use a vacuum cleaner to collect dust, dirt, etc.: Vacuum (up) the cake crumbs, would you?
(Definition of vacuum from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of vacuum?
Browse related topics

You are looking at an entry to do with Empty, but you might be interested in these topics from the Full and empty topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “vacuum” in other dictionaries

Word of the Day

wave

to raise your hand and move it from side to side as a way of greeting someone, telling someone to do something, or adding emphasis to an expression

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More