retention


retention
1. The keeping in the body of what normally belongs there, especially the retaining of food and drink in the stomach. 2. The keeping in the body of what normally should be discharged, as urine or feces. 3. Retaining that which has been learned so that it can be utilized later as in recall, recognition, or, if r. is partial, relearning. SEE ALSO: memory. 4. Resistance to dislodgement. 5. In dentistry, a passive period following treatment when a patient is wearing an appliance or appliances to maintain or stabilize the teeth in the new position into which they have been moved. [L. retentio, a holding back]
- denture r. the means by which dentures are held in position in the mouth.
- direct r. r. obtained in a removable partial denture by the use of attachments or clasps that resist their removal from the abutment teeth.
- indirect r. r. obtained in a removable partial denture through the use of indirect retainers.
- partial denture r. the fixation of a removable partial denture by the use of clasps, indirect retainers, or precision attachments.

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re·ten·tion ri-'ten-chən n
1) the act of retaining: as
a) abnormal retaining of a fluid or secretion in a body cavity <\retention of urine> <\retention of bile>
b) the holding in place of a tooth or dental replacement by means of a retainer
2) a preservation of the aftereffects of experience and learning that makes recall or recognition possible

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n.
inability to pass urine, which is retained in the bladder. The condition may be acute and painful or chronic and painless. Acute urinary retention (AUR) can be precipitated by surgery, urinary infection, constipation, and drugs; spontaneous AUR is usually caused by enlargement of the prostate gland in men, although many other conditions may result in obstruction of bladder outflow. Retention is relieved by catheter drainage of the bladder, after which the underlying problem is dealt with. See also intermittent self-catheterization.

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re·ten·tion (re-tenґshən) [L. retentio, from retentare to hold firmly back] 1. the act or process of keeping in possession, or of holding in place or position. 2. the persistent keeping within the body of matter normally excreted. 3. in cavity preparation, the prevention of displacement of a restoration. 4. in orthodontic therapy, the period during which the patient is wearing an appliance(s) to maintain and stabilize the teeth in the position into which they were moved.

Medical dictionary. 2011.

Synonyms:

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  • rétention — [ retɑ̃sjɔ̃ ] n. f. • 1291; lat. retentio 1 ♦ Fait de retenir (I). Rétention d informations. 2 ♦ Dr. Droit de rétention, qui permet à un créancier de retenir un objet appartenant à un débiteur, jusqu à ce qu il se soit acquitté de sa dette.… …   Encyclopédie Universelle

  • retention — re·ten·tion /ri ten chən/ n 1: the act of retaining or the state of being retained 2: the portion of the insurance on a particular risk not reinsured or ceded by the originating insurer Merriam Webster’s Dictionary of Law. Merriam Webster. 1996 …   Law dictionary

  • Retention — (lat.: retinere = „zurückhalten“) ist ein Begriff: in der Philosophie: Retention (Philosophie) in der Rechtswissenschaft: Retention (Recht) in der Chemie, siehe: Nukleophile Substitution in der Chromatographie: Retention (Chromatographie) in der… …   Deutsch Wikipedia

  • Retention d'œuf — Rétention d œuf Fichier:Egg bound (testudine) Radio d une tortue présentant une rétention d œuf La rétention d’œufs est une incapacité d une femelle à expulser un ou des œufs. Ce terme s applique habituellement aux ovipares, mais peut également… …   Wikipédia en Français

  • Retention — can have the following meanings:*Retention basin, instance retaining (e.g. water in the ground) *In learning: it is the ability to retain facts and figures in memory (spaced repetition) *Grade retention, in schools, keeping a student in the same… …   Wikipedia

  • retention — Retention. s. f. v. Terme de Pratique. En cette acception il ne se dit que d Une cause retenuë à un Tribunal. La retention d une cause. un arrest de retention. Retention, se dit aussi, d Une maladie, par laquelle l urine est retenuë. Avoir une… …   Dictionnaire de l'Académie française

  • Retention — Re*ten tion, n. [L. retentio: cf. F. r[ e]tention. See {Retain}.] 1. The act of retaining, or the state of being ratined. [1913 Webster] 2. The power of retaining; retentiveness. [1913 Webster] No woman s heart So big, to hold so much; they lack… …   The Collaborative International Dictionary of English

  • retention — Retention, retenuë, Retentio. Retention d usufruit vaut autant que delivrance de la chose, Exceptio vsufructus instar est emancipatus fundi, Operatur (inquiunt) traditionem. B …   Thresor de la langue françoyse

  • retention — [ri ten′shən] n. [ME retencioun < MFr retention < L retentio] 1. a retaining or being retained 2. power of or capacity for retaining 3. a) a remembering; memory b) ability to remember 4. Med …   English World dictionary

  • Retention — Retentiōn (lat.), Zurück , Vorenthaltung; das Festhalten eines wiedereingerichteten gebrochenen Gliedes durch Verbände …   Kleines Konversations-Lexikon

  • Retention — Retention, lat. deutsch, Zurückhaltung, Vorenthaltung; R. srecht, das Recht, eine Sache zurückzuhalten, bis eine Forderung befriedigt ist; retenuto, ital, in der Musik: zurückgehalten …   Herders Conversations-Lexikon


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