suction

suction
The act or process of sucking. SEE ALSO: aspiration (1), aspiration (2). [L. sugo, pp. suctus, to suck]
- posttussive s. a s. sound heard on auscultation over a pulmonary cavity at the end of a cough.
- Wangensteen s. a modified siphon that maintains constant negative pressure, used with a duodenal tube for the relief of gastric and intestinal distention. SYN: Wangensteen tube.

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suc·tion 'sək-shən n
1) the act or process of sucking
2 a) the act or process of exerting a force upon a solid, liquid, or gaseous body by reason of reduced air pressure over part of its surface
b) force so exerted
3) the act or process of removing secretions or fluids from hollow or tubular organs or cavities by means of a tube and a device (as a suction pump) that operates on negative pressure
suction vt to remove from a body cavity or passage by suction

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n.
the use of reduced pressure to remove unwanted fluids or other material through a tube for disposal. Suction is often used to clear secretions from the airways of newly born infants to aid breathing. During surgery, suction tubes are used to remove blood from the area of operation and to decompress the stomach (nasogastric suction) and the pleural space of air and blood (chest suction).

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suc·tion (sukґshən) [L. sugere to suck] aspiration of gas or fluid by mechanical means.

Medical dictionary. 2011.

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  • Suction — is the flow of a fluid into a partial vacuum, or region of low pressure. The pressure gradient between this region and the ambient pressure will propel matter toward the low pressure area. Suction is popularly thought of as an attractive effect,… …   Wikipedia

  • Suction — Suc tion, n. [L. sugere, suctum, to suck; cf. OF. suction. See {Suck}, v. t.] The act or process of sucking; the act of drawing, as fluids, by exhausting the air. [1913 Webster] {Suction chamber}, the chamber of a pump into which the suction pipe …   The Collaborative International Dictionary of English

  • suction — [suk′shən] n. [L suctio < suctus, pp. of sugere, to SUCK] 1. the act or process of sucking 2. the production of a vacuum or partial vacuum in a cavity or over a surface so that the external atmospheric pressure forces the surrounding fluid,… …   English World dictionary

  • suction — ► NOUN ▪ the production of a partial vacuum by the removal of air in order to force fluid into a vacant space or produce adhesion. ► VERB ▪ remove using suction. ORIGIN Latin, from sugere suck …   English terms dictionary

  • suction — 1620s, from L.L. suctionem (nom. suctio), noun of action from pp. stem of L. sugere to suck (see SUCK (Cf. suck)) …   Etymology dictionary

  • suction — [[t]sʌ̱kʃ(ə)n[/t]] suctions, suctioning, suctioned 1) N UNCOUNT Suction is the process by which liquids, gases, or other substances are drawn out of somewhere. Dustbags act as a filter and suction will be reduced if they are too full... If the… …   English dictionary

  • suction — n. the use of reduced pressure to remove unwanted fluids or other material through a tube for disposal. Suction is often used to clear secretions from the airways of newly born infants to aid breathing. During surgery, suction tubes are used to… …   The new mediacal dictionary

  • suction — I. noun Etymology: Late Latin suction , suctio, from Latin sugere to suck more at suck Date: 1626 1. the act or process of sucking 2. a. the act or process of exerting a force upon a solid, liquid, or gaseous body by reason of reduced air… …   New Collegiate Dictionary

  • suction — suc|tion [ˈsʌkʃən] n [U] [Date: 1600 1700; : Late Latin; Origin: suctio, from Latin sugere to suck ] 1.) the process of removing air or liquid from an enclosed space so that another substance is sucked in, or so that two surfaces stick together ▪ …   Dictionary of contemporary English

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