(v. i.) To pass gradually from a sound, prosperous, or perfect state, to one of imperfection, adversity, or dissolution; to waste away; to decline; to fail; to become weak, corrupt, or disintegrated; to rot; to perish; as, a tree decays; fortunes decay; hopes decay.
(v. t.) To cause to decay; to impair.
(v. t.) To destroy.
(n.) Gradual failure of health, strength, soundness, prosperity, or of any species of excellence or perfection; tendency toward dissolution or extinction; corruption; rottenness; decline; deterioration; as, the decay of the body; the decay of virtue; the decay of the Roman empire; a castle in decay.
(n.) Destruction; death.
(n.) Cause of decay.
Example Sentences:
(1) Q In radioactive decay, different materials decay at different rates, giving different half lives.
(2) 4) Parents imagined that fruit drinks, carbonated beverages and beverages with lactic acid promoted tooth decay.
(3) In the absence of prostigmine, increasing the concentration of ACh in the synaptic cleft did not change the time constant for decay of end-plate currents.
(4) The kinetics of bimolecular decay of alpha-tocopheroxyl free radicals (T) was studied by ESR mainly in ethanol and heptanol solvents.
(5) For those synapses that were close to the soma the time constant for decay for the non-NMDA component, which was voltage insensitive, ranged from 4-8 ms. 7.
(6) In analyzing the results with any regimen it is important to have long follow-up since late relapses do occur and initial very positive results tend to decay with greater numbers of patients treated.
(7) In one normal ear, ten noise trauma ears, 11 Meniere disease ears, and 24 eighth nerve lesion ears to reflexes or reflex decay that were suggestive or retrocochlear lesions were observed.
(8) Biochemical, molecular, and immunohistologic studies have identified membrane cofactor protein (MCP) and decay accelerating factor (DAF) on trophoblast cells, which could assist in preventing lysis of the cells by complement-activating maternal antibodies.
(9) It has been 40 years since the first community in the United States added a regulated amount of fluoride to its public water supply to prevent tooth decay.
(10) This could reflect the existence of a parallel set of synapses with fast decay that serve as a shortterm store.
(11) However, clemastine caused a decay in subjects' performance in both Experiments I and II, but only on the tracking task.
(12) The nylon group had the second highest amount of induced WTR cylinder at one day, which had decayed to ATR cylinder by five months.
(13) The observed signals from germinating seeds of Phaseolus aures and decaying leaves of Eucalyptus are presented to show that the signals have characteristic kinetics and intensity.
(14) We develop an analogy between the steric hindrance among receptors detecting randomly placed haptens and the temporary locking of a Geiger counter that has detected a radioactive decay.
(15) Left ventricular relaxation rate was measured by calculation of a time constant of left ventricular pressure decay (T) derived from an exponential curve fit to the digitized tip-micromanometer left ventricular pressure signal.
(16) Factors increasing presynaptic activity (frequency or number of afferent stimulations) during the induction event did not affect the relative amount of LTP decay.
(17) Inhibitor activity decayed with time after radiation (2 Gy) with no activity detected at 6 h even though the cells remained in G2 phase, suggesting that either synthesis or activation of additional components is necessary for recovery from G2 arrest.
(18) These results are consistent with the previous observation in HTC cells that the decay rate of ODC activity in the presence of cycloheximide correlated well with the proportion of ODC present as a complex with antizyme, suggesting the ubiquitous role of antizyme in ODC degradation.
(19) The outward current decays exponentially with an early and late phase.
(20) The decay of acid soluble radioactivity was similar in the two groups, although protein synthesis was lowered by vitamin A deficiency.
Erosion
Definition:
(n.) The act or operation of eroding or eating away.
(n.) The state of being eaten away; corrosion; canker.
Example Sentences:
(1) The counts of EAC-receptor carrying neutrophils were two times lower in the patients with erosive ulcerative lichen planus as against those with the typical form of the disease.
(2) Endoscopy showed an irregular erosion of 4 by 2 cm, from which biopsies were taken.
(3) The dispute is rooted in the recent erosion of many of the freedoms Egyptians won when they rose up against Mubarak in a stunning, 18-day uprising.
(4) Poly(ortho ester) bioerodible polymers are suitable materials for the topical administration of a wide variety of therapeutic agents; varying the nature and amounts of excipients physically incorporated into the polymer will vary the erosion rates from a few hours to many months.
(5) In support of this argument, a case of erosive arthritis is reported in a skeleton from Kulubnarti, Republic of the Sudan (c. 700-1450 A.D.).
(6) As many as 72 patients with erosive and ulcerous injuries to the stomach and duodenum were examined for the clinical efficacy of antepsin (sucralfate).
(7) Important problems currently under study or requiring investigation for better understanding of the pathophysiology and management are reviewed under three major categories: acute peptic erosions and ulcers, gastric ulcer, and duodenal ulcer.
(8) We have summed up four types of essential X-ray features of cortical erosion and their pathological bases, clarified the limited ability of X-ray to reveal early cortical invasion and the range of infiltration.
(9) This is a report of the short- and long-term complications in a premature infant with tracheoesophageal fistula, including those related to central venous alimentation, seizures, chylothorax, bronchopulmonary dysplasia, dental erosions, gastroesophageal reflux, pulmonary problems, and gall stones.
(10) Erosion was observed on all teeth, but was commonest on the upper incisors, canines and premolars, and severest on palatal surfaces.
(11) Postoperatively, visual acuity was improved and symptoms of erosion decreased in both patients.
(12) Adrenaline produced severe sub-mucosal haemorrhage, but no erosions or ulceration, while prednisolone and fasting gave no gross pathology.
(13) A follow-up study of erosive prepyloric changes (EPC) was undertaken in 60 patients who originally presented with non-ulcer dyspepsia and EPC grade 2 or 3.
(14) The presence of granularity and erosion did not much affect the estimated risks.
(15) These mice also have circulating rheumatoid factor (RF) and develop histological changes in their joints characterized by pannus formation, cartilage and bone erosions.
(16) We consider that the rarity of stricture rules out the necessity of any change in management, whether or not erosive oesophagitis is observed at endoscopy.
(17) It was hypothesized that an autoaggressive attack of lymphoid cells against the epithelium of the oral mucosa played a role in the pathogenesis of this erosive stomatitis and it was suggested that there might be a correlation between the occurrence of stomatitis and the presence of Castleman's tumor.
(18) Fatale haemoptysis occurred as a result of circumferential caustic erosion to the right intermediate bronchus caused by a tablet of ferrous sulphate which remained in contact for 4 days.
(19) Prophylactic treatment by intra-articular injections twice weekly for 4 weeks caused amelioration of canine cartilage erosions.
(20) In 17 out of 18 such patients, the two-week therapy with sucralfat (venter) resulted in the disappearance of esophagitis with multiple erosions.