(v. t.) To draw out or lengthen in time or (rarely) in space; to continue; to prolong; as, to protract an argument; to protract a war.
(v. t.) To put off to a distant time; to delay; to defer; as, to protract a decision or duty.
(v. t.) To draw to a scale; to lay down the lines and angles of, with scale and protractor; to plot.
(v. t.) To extend; to protrude; as, the cat can protract its claws; -- opposed to retract.
(n.) Tedious continuance or delay.
Example Sentences:
(1) AL-ST works with another dose distribution in time than the conventional brachytherapy, so a higher fractionation of high-dose-rate afterloading is substituted for the classical protraction of low-dose-rate brachytherapy.
(2) Whereas a protracted inhibitory activity is observed in haemophiliacs after replacement therapy (isoantibodies) as well as in acquired haemophilia (autoantibodies), immediate inhibition is characteristic of antibodies directed against phospholipids.
(3) A small number of children with protracted diarrhoea, who have severe mucosal injury may not be able to handle even starch and may require diets based on short chain glucose polymers.
(4) The effects of maxillary protracting bow appliance were the maxillary forward movement associated with counter-clockwise rotation of the nasal floor and the mandibular backward movement associated with clockwise rotation.
(5) A high responsiveness to SCW antigens was seen more frequently in sarcoidosis patients with protracted clinical course.
(6) A downward protraction force produced relatively uniform stress distributions, indicating the importance of the force direction in determining the stress distributions from various orthopedic forces.
(7) Reports in the literature suggest a poor prognosis in the presence of this complication, because of protracted renal damage and chronic renal failure.
(8) However, in the majority (53%) of patients, late recurrence was local and survival subsequent to treatment of these metastases was often protracted, emphasizing the importance of long-term follow-up in all patients with cutaneous melanoma.
(9) According to data in the literature the hormetic effect comprises stimulation of the immune system, a general increase of the resistance of the organism, a reduced risk of cancer and in model organisms a protraction of the median life span was observed.
(10) Human cancers undergo protracted complex development from benign to malignant states, as most thoroughly documented in the mole-to-melanoma sequence.
(11) Pouch young are born prior to retinal innervation of the primary visual centers and spend a protracted period of development in the pouch, making them ideal for visual, developmental studies.
(12) They say an increasing number of “protracted refugees” living in centres in Jordan, Lebanon, Turkey and Iraq will attempt the treacherous journey to Europe because they cannot offer their families a life or a future in the camps.
(13) The duration of the pre-ejection period of the systole, the Q-Kd interval and Achilles tendon reflex was protracted.
(14) Initial clinical trials utilized a daily schedule of administration, which led to severe and protracted myelosuppression and inadequate evaluation of the antitumor spectrum of mitomycin-C.
(15) Immature granulocytes would not exit through a restrictive barrier even after protracted periods and were not responsive to chemoattractants.
(16) The predominant clinical characteristic of this complication was protracted pancytopenia, which required 2 to 5 months recovery time after treatment and did not resolve in one patient.
(17) RBE values increased as dose was protracted, largely due to the reduced effectiveness of protracted gamma irradiation; however, about 28% of the increase can be attributed to the increase in neutron-induced injury caused by dose protraction.
(18) I have not known any time in my half century in this business in which we have had this many simultaneous, complex and protracted crises, of no solution right now.
(19) Within each layer deriving from the cortical plate (layers VIa to II-III), GABA-immunoreactivity showed a protracted maturation in which the first GABA-positive cells were detected a few days after cell birth but substantial numbers of neurons began to express GABA considerably later.
(20) Dose response curves for acute and protracted exposures have been obtained for cells derived from patients with cancer-prone syndromes including ataxia telangiectasia (AT) and Bloom's syndrome.
Tract
Definition:
(n.) A written discourse or dissertation, generally of short extent; a short treatise, especially on practical religion.
(v.) Something drawn out or extended; expanse.
(v.) A region or quantity of land or water, of indefinite extent; an area; as, an unexplored tract of sea.
(v.) Traits; features; lineaments.
(v.) The footprint of a wild beast.
(v.) Track; trace.
(v.) Treatment; exposition.
(v.) Continuity or extension of anything; as, the tract of speech.
(v.) Continued or protracted duration; length; extent.
(v.) Verses of Scripture sung at Mass, instead of the Alleluia, from Septuagesima Sunday till the Saturday befor Easter; -- so called because sung tractim, or without a break, by one voice, instead of by many as in the antiphons.
(v. t.) To trace out; to track; also, to draw out; to protact.
Example Sentences:
(1) Within the outflow tract wall, the labelled cells were enmeshed by strands of alcian blue-stained extracellular matrix.
(2) Findings on plain X-ray of the abdomen, using the usual parameters of psoas and kidney shadows in the Nigerian, indicate that the two communities studied are similar but urinary calculi and urinary tract distortion are significantly more prominent in the community with the higher endemicity of urinary schistosomiasis.
(3) Sixteen patients (27%) manifested anomalies of the urinary tract: 12 had markedly altered kidneys, 8 of which were unilateral and ipsilateral to the diaphragmatic defect.
(4) Positivity was not correlated with current residence census tract socioeconomic indicators in black or white females.
(5) The course of urogenital tuberculosis is complicated by unspecific bacterial infections of the urinary tract and nephrolithiasis.
(6) They are best explained by interactions between central sympathetic activity, brainstem control of respiration and vasomotor activity, reflexes arising from around and within the respiratory tract, and the matching of ventilation to perfusion in the lungs.
(7) Febrile reactions were not distributed randomly among the patients; those with respiratory tract infection experienced more febrile reactions during periods with infection than during periods without.
(8) The pathogenicity of Mycoplasma pneumoniae in atypical pneumonias can be considered confirmed according to the availabile literature; its importance for other inflammatory diseases of the respiratory tract, particularly for chronic bronchitis, is not yet sufficiently clear.
(9) We present numerical methods for studying the relationship between the shape of the vocal tract and its acoustic output.
(10) A good understanding of upper gastrointestinal physiology is required to properly understand the pathophysiological events in various diseases or after operations on the upper gastrointestinal tract.
(11) The primary afferent fibers diverge in the brainstem into a short ascending and a long descending tract.
(12) About tow amyloid tumors diagnosed because of oropharyngeous signs, the authors remind the main symptoms at the upper airway and ENT tracts; the local, regional and general treatment will be discussed.
(13) Magnetic polyethyleneimine (PEI) microcapsules have been developed for trapping electrophilic intermediates in the gastrointestinal (GI) tract.
(14) Cholecystectomy provided successful treatment in three of the four patients but the fourth was too ill to undergo an operation; in general, definitive treatment is cholecystectomy, together with excision of the fistulous tract if this takes a direct path through the abdominal wall from the gallbladder, or curettage if the course is devious.
(15) Plasmid profiling was used to distinguish strains of lactobacilli inhabiting the digestive tract of piglets and the feces of sows.
(16) Urologic evaluation of all patients with congenital scoliosis is recommended; however, diagnostic ultrasonographic evaluations of the urinary tract have proven to be an acceptable alternative as an initial screening modality.
(17) A total of 38 patients underwent attempted percutaneous extraction of upper tract calculi with the Wolf nephroscope.
(18) A significant increase in the number of C. albicans CFU in homogenized and plated segments of the GI tract was recognized in mice with murine AIDS versus the control animals.
(19) Total white cell counts were reviewed in paediatric in-patients with viral gastroenteritis, bacterial gastroenteritis, delayed recovery following acute gastroenteritis, viral lower respiratory tract infections and cow's milk protein intolerance.
(20) Both Shigella and Salmonella transferred multi-drug resistance to some enterobacteria--E. coli and Proteus as well as to Salmonella typhimurium when the latter was also present in the intestinal tract; of these some 10--40 per cent acquire the multi-drug resistance of Salmonella heidelberg and Shigella sonnei.