| perilimbal suction cup | A device for increasing intraocular pressure by impeding circulation and aqueous humor flow from the eye. (05 Mar 2000) |
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| Wangensteen suction | A modified siphon that maintains constant negative pressure, used with a duodenal tube for the relief of gastric and intestinal distention. Synonym: Wangensteen tube. (05 Mar 2000) |
| posttussis suction sound | A sound produced by the falling back of a drop of mucus or pus into a pulmonary cavity after the latter has been emptied by coughing. (05 Mar 2000) |
| posttussive suction | A suction sound heard on auscultation over a pulmonary cavity at the end of a cough. (05 Mar 2000) |
| suction | The act or process of sucking; the act of drawing, as fluids, by exhausting the air. Suction chamber, the chamber of a pump into which the suction pipe delivers. Suction pipe, Suction valve, the induction pipe, and induction valve, of a pump, respectively. Suction pump, the common pump, in which the water is raised into the barrel by atmospheric pressure. Origin: L. Sugere, suctum, to suck; cf. OF. Suction. See Suck. Source: Websters Dictionary (01 Mar 1998) |
| suction cup | One of the cupping glasses of various shapes, formerly used to produce local hyperaemia according to Bier's method. Wet cup, a cupping glass formerly applied to a part previously scarified or incised to draw and remove blood. (05 Mar 2000) |
| suction drainage | Closed drainage of a cavity, with a suction apparatus attached to the drainage tube. (05 Mar 2000) |
| suction ophthalmodynamometer | An ophthalmodynamometer with a suction disk which increases ocular pressure during ophthalmoscopic observation of the retinal artery. (05 Mar 2000) |
| suction plate | In dentistry, a plate held in place by atmospheric pressure. (05 Mar 2000) |
| absolute unit | A unit whose value is constant regardless of place or time and not derived from dependent on gravitation. (05 Mar 2000) |
| alexin unit | The smallest amount (highest dilution) of complement that will cause haemolysis of a unit of red blood cells in the presence of a haemolysin unit. Synonym: alexin unit. (05 Mar 2000) |
| Allen-Doisy unit | The quantity of oestrogen capable of producing in a spayed mouse a characteristic change in the vaginal epithelium, namely, disappearance of leukocytes and appearance of cornified cells, as determined by a vaginal smear; equal approximately to one-half of an estrone unit. Synonym: mouse unit. (05 Mar 2000) |
| amboceptor unit | haemolysin unit |
| androgen unit | The androgenic activity of 100 ug (0.1 mg) of crystalline androsterone as assayed by the comb growth response in capons. (05 Mar 2000) |
| antigen unit | The smallest amount of antigen that, in the presence of specific antiserum, will fix 1 complement unit. (05 Mar 2000) |