vacuum

Từ điển Oxford Advanced Learner 8th

vac·uum [vacuum vacuums vacuumed vacuuming] noun, verb BrE [ˈvækjuəm] NAmE [ˈvækjuəm]
noun
1. a space that is completely empty of all substances, including all air or other gas
•a vacuum pump (= one that creates a ↑vacuum )
•vacuum-packed foods (= in a package from which most of the air has been removed)
2. usually singular a situation in which sb/sth is missing or lacking
•His resignation has created a vacuum which cannot easily be filled.
3. usually singular the act of cleaning sth with a ↑vacuum cleaner
•to give a room a quick vacuum

Word Origin:
mid 16th cent.: modern Latin, neuter of Latin vacuus ‘empty’.

Example Bank:
•Other gases rush in to fill the vacuum.
•The machine then creates a vacuum.
•The writer criticized the moral vacuum in society.
Idiom: ↑in a vacuum
 
verb transitive, intransitive ~ (sth)
to clean sth using a ↑vacuum cleaner
Syn: ↑hoover
•Have you vacuumed the stairs?
Verb forms:

Word Origin:
mid 16th cent.: modern Latin, neuter of Latin vacuus ‘empty’.
 

• Từ đồng nghĩa / Synonyms:
  vacuum cleaner, vacuity, void, vacancy, emptiness, vacuum-clean, hoover