vacuum

Meaning

Noun

1. A region of space that contains no matter.
2. The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.
3. (colloquial) Ellipsis of vacuum cleaner.
4. A spacetime having tensors of zero magnitude.
5. An emptiness in life created by a loss of a person who was close, or of an occupation.
6. An exercise in which one draws their abdomen towards the spine.

Verb

1. To clean (something) with a vacuum cleaner.
2. To use a vacuum cleaner.
3. To optimise a database or database table by physically removing deleted tuples.

Synonyms

vacuity

void

emptiness

hoover

vacuum cleaner

vacuum-clean

hollow

vacancy

vac

blank

non-existence

nothingness

rarefaction

space

vacuo

V

V

vacuum apparatus

non-entity

vacuum unit

vacuum plant

vacuum tightness

airvoid

autovac

vacuum level

pressure below the atmospheric

degree of vacuum

aspirator

vacuum degree

blankness

blank space

carpet sweeper

clean

download

empty

empty space

hiatus

lacuna

Pronounced as (IPA)

/ˈvæ.kjuːm/

Etymology

From Latin vacuum (“an empty space, void”), noun use of neuter of vacuus (“empty”), related to vacare (“be empty”).