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1. A device for removing liquids or gases by suction, especially an instrument that uses suction to remove substances, such as mucus or serum, from a body cavity.
2. A suction pump used to create a partial vacuum.


(General Engineering) a device employing suction, such as a jet pump or one for removing fluids from a body cavity


(ˈæs pəˌreɪ tər)

1. an apparatus employing suction.
2. a suction pump that operates by the pressure differential created by the high-speed flow of a fluid past an intake orifice.
3. a suction instrument used in aspirating fluids from the body.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aspirator - a pump that draws air or another gas through a liquidaspirator - a pump that draws air or another gas through a liquid
pump - a mechanical device that moves fluid or gas by pressure or suction
References in periodicals archive ?
Growing restrictions and increasing water prices ensure that the cost of operating a water aspirator will grow even more expensive and will likely gain greater regulatory scrutiny in the future.
To purify the product and internal standard, we carried out solid-phase extraction with the aid of a 20-position vacuum extraction manifold (Waters) connected to a water aspirator.
Vacuum filtration setup (much preferred): Buchner funnel (7 cm or larger) Filter paper (7 cm or larger) Filter flask (125 mL or larger) Vacuum adapter Vacuum tubing Water aspirator or Gravity Filtration setup (possible but not recommended): 7 cm funnel Larger filter paper, folded into a cone (cotton ball inadequate) Erlenmeyer flask (125 mL)
To obtain required levels of vacuum using a water aspirator, the water often has to be run at full tap.
Researchers are also continuing to move away from water aspirators and oil-sealed rotary vane pumps due to environmental impacts, maintenance concerns and cost of ownership.