vacuum

noun · verbA2

Định nghĩa theo từ loại

Danh từ

noun

Plural noun:

vacuumsvacuavacuüm

1.
A region of space that contains no matter.
Đồng nghĩa: vacancy, void
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.
a vacuum of 26 inches of mercury, or 13 pounds per square inch
3.
(abbreviation, alt of, colloquial, ellipsis)(colloquial, only pluralized as "vacuums") Ellipsis of vacuum cleaner.
Đồng nghĩa: hoover
4.
(physics) A spacetime having tensors of zero magnitude.
5.
(physics) A ground state of a quantum field or of local spacetime, or more abstractly the lowest-energy state of a system.
6.
An emptiness in life created by a loss of a person who was close, or of an occupation.
7.
An exercise in which one draws their abdomen towards the spine.

Động từ

verb

V_es/s

vacuums

V_ing/Gerund

vacuuming

V_ed/pp

vacuumedvacuüm

1.
(transitive)To clean (something) with a vacuum cleaner.
Đồng nghĩa: hoover
2.
(intransitive)To use a vacuum cleaner.
Đồng nghĩa: to do the hoovering, to hoover
3.
(transitive)(transitive, databases) To optimise a database or database table by physically removing deleted tuples.

Từ liên quan

Đồng nghĩa

vacancy void hooverto do the hooveringto hooverhooveringvacuum state

Trái nghĩa

plenum

Cùng gốc / liên quan

autovacuumgravastarpseudovacuumrevacuumsubvacuumvactrainvacufugevacupuncturevacutainervacuumizeabdominal vacuumnature abhors a vacuumstomach vacuumvacuum workoutbee vacuumcentral vacuumdouble Kerr vacuumelectrovacuumfalse vacuumhigh vacuum

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Nguồn gốc từ

vacuum (vacuum), a subsense of vacuum (empty space), a substantivised form of vacuus (empty); related to vacāre (to be empty).