(v. t.) To draw back; to draw up or shorten; as, the cat can retract its claws; to retract a muscle.
(v. t.) To withdraw; to recall; to disavow; to recant; to take back; as, to retract an accusation or an assertion.
(v. t.) To take back,, as a grant or favor previously bestowed; to revoke.
(v. i.) To draw back; to draw up; as, muscles retract after amputation.
(v. i.) To take back what has been said; to withdraw a concession or a declaration.
(n.) The pricking of a horse's foot in nailing on a shoe.
Example Sentences:
(1) Brain damage may be followed by a number of dynamic events including reactive synaptogenesis, rerouting of axons to unusual locations and altered axon retraction processes.
(2) Tottenham Hotspur’s £400m redevelopment of White Hart Lane could include a retractable grass pitch as the club explores the possibility of hosting a new NFL franchise.
(3) Any MP who claims this is not statutory regulation is a liar, and should be forced to retract and apologise, or face a million pound fine.
(4) During the first 15 to 20 min of metamorphosis the larval arms are retracted and resorbed into the aboral surface of the juvenile.
(5) • Written, oral and video statements of self-incrimination and self-renunciation by the detainees, apparently induced by the authorities, have been released through official media channels (for example, lawyer Zhang Kai was induced to make such a statement, which he later retracted).
(6) Duane's retraction syndrome is a congenital eye movement disorder characterized by a deficiency of abduction, mild limitation of adduction, with retraction and narrowing of the palpebral fissure on attempted adduction.
(7) Axonal trees display differential growth during development or regeneration; that is, some branches stop growing and often retract while other branches continue to grow and form stable synaptic connections.
(8) She said she was not worried by Rubio’s one-time position on his immigration bill, later retracted, that he could not support reform if it included citizenship for gay couples.
(9) Useful differential morphological criteria can be: star-like or transverse ring-shaped profile of isolated ulcerations, tubular ileocolic junction with retracted cecum and open valve, and uniformity of lesion in the comprehensive picture of the clinical case.
(10) Both require more brain retraction and have greater risk to the facial nerve than the translabyrinthine approach.
(11) Unlike posterior tympanoplasty, this technique makes it possible to meticulously remove the osteitic bone invariably found in the facial recess when there is infection of the retraction pocket.
(12) In the third patient laparotomy was applied owing to the bleeding from the retracted, cut uterine artery.
(13) Because of laboratory and clinical observation that recurrent nerve paralysis retracts the involved vocal cord from the midline, it was proposed that deliberate section of the recurrent nerve would improve the vocal quality of patients with spastic dysphonia.
(14) Seven to 30 days following axotomy the volume of the hypoglossal nucleus was significantly diminished, undoubtedly reflecting dendritic retraction (P less than 0.05).
(15) Contacts resulting in collapse and retraction were often accompanied by a rapid and transient burst of lamellipodial activity along the neurite 30-50 microns proximal to the retracting growth cone.
(16) At three, six, and twelve months after the first operation the development of retraction pockets was also studied.
(17) The anchoring wire can also be retracted and repositioned.
(18) The right occipital lobe is retracted laterally from the falx cerebri.
(19) These experiments demonstrated that accessory abducens is a primary controller of eye retraction through its axons to retractor bulbi.
(20) A commercial system for producing retracted compensators has been adapted to suit local needs, and is evaluated here.
Retractile
Definition:
(a.) Capable of retraction; capable of being drawn back or up; as, the claws of a cat are retractile.
Example Sentences:
(1) The view that testes found lateral to the external ring and which could be pushed some way into the scrotum were merely retractile was questioned.
(2) Only maldescended and non-retractile testes were treated.
(3) The most important task for the clinician is to discern truly undescended from retractile testes.
(4) However, hCG is recommended if the clinician suspects that a testis is retractile.
(5) In the presence of pulmonary emphysema, loss of retractility prevented total collapse of the underlying lung.
(6) Comparison of clinical, radiological and endoscopic data revealed the following information: 1. most frequently radiology showed retractile, pulmonary condensation syndrome (40 cases); 2. a large predominance of close, bulging tumours (45 times) in relation to endoscopic bronchial stenosis (22 times); 3. almost exclusive identification of bronchial epidermoid cancer in this series (34 times); 4. the masculine sex and use of tobacco remain 2 unavoidable elements in this pathology.
(7) In the group of infertile men with a history of retractile testes, 20 subjects still retained palpable pathological changes of the testes.
(8) These results suggest that the retractile testis has developmental failures characteristic of a cryptorchid testis and therefore requires orchiopexy.
(9) Overall, these data support the hypothesis of a metabolically active, temperature-dependent, anisotropically organized retractile mechanism in the dorsal skin of the perinatal rat.
(10) Linear relationship between platelet count in the clot from the plasma and the force of the clot contraction, detected in normal subjects, allows one to do without standardization of the platelet count to a preset level when measuring the blood platelet retractile activity in patients.
(11) Among these is the variant known as retractile mesenteritis, which involves predominantly the mesentery of the small intestine and associated vessels; involvement of the mesocolon and the colon is less frequent.
(12) Round retractile and defective (with protrusions) forms of gliocytes predominate.
(13) Twenty-seven per cent of retractile and 11 per cent of truly undescended testicles were demonstrated in more than one ascended position.
(14) A patient with ampullary disconnection during gastrectomy is presented, emphasizing the chronicity and retractile scarring which exposes the bile and pancreatic ducts to simultaneous injury.
(15) One had a history of retractile testes and the other of previous testicular dislocation.
(16) Orchidopexy for retained testes had been performed on 15 of the 536 boys (2.8%) while one other had orchidopexy for high retractile testes (0.2%).
(17) The other three patients had retractile testes which were held in the high position by surrounding adhesions.
(18) The anatomical position of the testis at sonography and the patient's age provide objective evidence to discern retractile and truly undescended testes.
(19) Sertoli cells with eosinophilic granular cytoplasm were found in the testes of one prepubertal and four postpubertal cryptorchid males, two males with Del Castillo's syndrome, two males with retractile testes, four males with varicocele, two male pseudohermaphrodites, two males with macroorchidism, and one male with AIDS and interstitial orchitis.
(20) However, when the purpose is to achieve retractility of a narrow foreskin to avoid further scarring and phimotic development after recurrent balanitis, a preputial plasty might be sufficient.