vacuum
IPA: vˈækjum
noun
- A region of space that contains no matter.
- 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.
- (physics) A spacetime having tensors of zero magnitude.
- An emptiness in life created by a loss of a person who was close, or of an occupation.
- An exercise in which one draws their abdomen towards the spine.
- (colloquial, only pluralized as "vacuums") Ellipsis of vacuum cleaner. [A domestic or industrial mobile machine for cleaning floors and similar surfaces that draws dust and other particles into a container (a cyclonic type bin, or a filter bag) by the suction created by an electric motor driving a fan.]
verb
- (transitive) To clean (something) with a vacuum cleaner.
- (intransitive) To use a vacuum cleaner.
- (transitive, databases) To optimise a database or database table by physically removing deleted tuples.
Examples of "vacuum" in Sentences
- Beezus stops to unplug the vacuum.
- The surface of the moon is a vacuum.
- Is the universe a vacuum fluctuation
- The sound doesn't propagate in vacuum.
- It is the best vacuum cleaner in the world.
- Extreme ideologies exist in insulated vacuums.
- The electric susceptibility of a vacuum is zero.
- In the experiment the quarks ionized the vacuum area.
- The wafers are then stopped by the suction of the vacuum.
- Secondly, a vacuum is not a void but the absence of ponderable matter in space.