noun (pl=vacuums or vacua; see Usage notes for plurals)
- A region of space that contains no matter.
- A vacuum cleaner.
Etymology: From (an empty space, void) noun use of neuter of vacuus (empty) related to vacare (be empty).
- (transitive) To clean (something) with a vacuum cleaner.
- (intransitive) To use a vacuum cleaner.
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Full Definition of vacuum