protraction

protraction
In dentistry, the extension of teeth or other maxillary or mandibular structures into a position anterior to normal. [see protractor]
- mandibular p. a type of facial anomaly in which the gnathion lies anterior to the orbital plane.
- maxillary p. a type of facial anomaly in which the subnasion lies anterior to the orbital plane.

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pro·trac·tion -'trak-shən n
1) the act of moving an anatomical part forward
2) the state of being protracted esp protrusion of the jaws

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pro·trac·tion (pro-trakґshən) [L. protrahere to drag forth] 1. drawing out or lengthening. 2. extension or protrusion. 3. a condition in which the teeth or other maxillary or mandibular structures are situated anterior to their normal position.

Medical dictionary. 2011.

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  • protraction — ● protraction nom féminin (bas latin protractio, du latin classique protrahere, tirer en avant) Projection des lèvres vers l avant dans l articulation d une voyelle. ⇒PROTRACTION, subst. fém. A. PHYSIOL. Extension en avant d (un) organe.… …   Encyclopédie Universelle

  • Protraction — Pro*trac tion, n. [L. protractio.] 1. A drawing out, or continuing; the act of delaying the termination of a thing; prolongation; continuance; delay; as, the protraction of a debate. [1913 Webster] A protraction only of what is worst in life.… …   The Collaborative International Dictionary of English

  • protraction — mid 15c., from Fr. protraction (late 15c.) or directly from L.L. protractionem, noun of action from pp. stem of protrahere (see PROTRACT (Cf. protract)) …   Etymology dictionary

  • Protraction — is the anatomical term of motion for anterior movement of the arms at the shoulders.It is the opposite of retraction.The major muscles involved include: [DartmouthAnatomy|shoulder/surface/scsurface3] [… …   Wikipedia

  • Protraction — Protraction, lat. deutsch, das Hervorziehen; Verzögern; Protractor, chirurgisches Werkzeug zum Wundenreinigen; der Gradbogen …   Herders Conversations-Lexikon

  • protraction — index adjournment, advance (increase), boom (increase), continuance, continuation (prolongation) …   Law dictionary

  • protraction — (pro tra ksion) s. f. Terme didactique. Traction en avant, action de tirer en avant. La protraction de la langue. Un mouvement de protraction. ÉTYMOLOGIE    Lat. protractionem, de pro, en avant, et trahere, tirer …   Dictionnaire de la Langue Française d'Émile Littré

  • protraction — noun Etymology: Late Latin protraction , protractio act of drawing out, from protrahere Date: 1535 1. the act of protracting ; the state of being protracted 2. the drawing to scale of an area of land …   New Collegiate Dictionary

  • protraction — /proh trak sheuhn, preuh /, n. 1. the act of protracting; prolongation; extension. 2. protrusion. 3. something that is protracted. 4. a drawing or rendering to scale. [1525 35; < LL protraction (s. of protractio) prolongation. See PROTRACT, ION]… …   Universalium

  • protraction — n. 1 the act or an instance of protracting; the state of being protracted. 2 a drawing to scale. 3 the action of a protractor muscle. Etymology: F protraction or LL protractio (as PROTRACT) …   Useful english dictionary

  • protraction — noun a) The condition of being protracted b) The act of protracting …   Wiktionary

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