Online Google Dictionary

vacuum 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb
/ˈvakˌyo͞o(ə)m/,/-yəm/,
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vacua, plural; vacuums, plural;
  1. Clean with a vacuum cleaner
    • - the room needs to be vacuumed
Noun
  1. A space entirely devoid of matter

  2. A space or container from which the air has been completely or partly removed

  3. A gap left by the loss, death, or departure of someone or something formerly playing a significant part in a situation or activity
    • - the political vacuum left by the death of the Emperor
  4. A vacuum cleaner

  1. clean with a vacuum cleaner; "vacuum the carpets"
  2. the absence of matter
  3. void: an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"
  4. a region that is devoid of matter
  5. an electrical home appliance that cleans by suction
  6. In everyday usage, vacuum is a volume of space that is essentially empty of matter, such that its gaseous pressure is much less than atmospheric pressure. The word comes from the Latin term for "empty". ...
  7. Vacuum is the name of a Swedish synthpop project originally formed by Alexander Bard, Anders Wollbeck and Mattias Lindblom, now used to refer to the song-writing/production duo Lindblom and Wollbeck, who also work together as a pop group under the same name. ...
  8. The Vacuum is a free bi-monthly newspaper published in Belfast, Northern Ireland by the arts organisation Factotum. Each issue is themed and contains critical commentary about the city and broader cultural issues. ...
  9. (Vacuumming) A vacuum cleaner (sometimes referred to as a Hoover, a genericized trademark) is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors. The dirt is collected by either a dustbag or a cyclone for later disposal.
  10. Alternative spelling of vacuum
  11. This term can be used to define any number of devices that use suction to collect dirt from the bottom and sides of a pool or spa. Most common is a vacuum head with wheels that attaches to a telepole and is connected to the suction line usually via the opening in the skimmer. ...
  12. A condition in which pressure has been reduced below the ambient atmospheric pressure. Vacuum is created in the intake manifold and can be used to operate a power brake booster.
  13. The term denoting a given space that is occupied by a gas at less then atmospheric pressure. For degrees of vacuum, see Vacuum Level.
  14. Similar to percolation but with a twist, vacuum or siphon brewing calls upon the same basic formula (water heated on the bottom and coffee grounds kept up top, with the two chambers linked by a glass tube). ...
  15. A gas with low pressure, having a minimum amount of atoms or molecules. The perfect vacuum is impossible to reach.
  16. A device used to clean the underwater surface of a pool or spa by creating suction in a hose line.
  17. an enclosed space or container from which air has been removed; a space empty of all matter.
  18. Can be used to remove water during a water change (syphon), and can clean the gravel and remove wastes.
  19. Vacuum is created through use of a vacuum pump or aspirator pump, to facilitate specific biological preparations, such as inclusions or disinfection of material for in vitro culture, etc.
  20. A condition created in a well when air is not allowed to be displaced between the casing and the pump column.
  21. A space absent of matter or nearly so.
  22. A pressure less than atmospheric pressure.
  23. the absence of matter, including air and other gas, from a particular space. When a vacuum is formed by attaching a vacuum pad to a contact surface and pumping out the air inside, atmospheric pressure on the outside holds the pad in place with incredible force.
  24. removal or evacuation of air and gas from a given space.
  25. A vacuum furnace is any furnace that may be operated under a vacuum.  Vacuum furnaces may be evacuated or they may be backfilled with inert or specific atmosphere gasses.  See Vacuum Furnaces below.