What's the difference between vitiate and weaken?

Vitiate


Definition:

  • (v. t.) To make vicious, faulty, or imperfect; to render defective; to injure the substance or qualities of; to impair; to contaminate; to spoil; as, exaggeration vitiates a style of writing; sewer gas vitiates the air.
  • (v. t.) To cause to fail of effect, either wholly or in part; to make void; to destroy, as the validity or binding force of an instrument or transaction; to annul; as, any undue influence exerted on a jury vitiates their verdict; fraud vitiates a contract.

Example Sentences:

  • (1) These conclusions vitiate previous explanations for gal3 associated long-term adaptation and noninducible phenotypes.
  • (2) Thus it is concluded that any solution or drug which needs to be injected should ideally be used at 37 degrees C, as temperature lower or higher than that may vitiate the results.
  • (3) Their review is marred by numerous errors which vitiate the potency estimates.
  • (4) Antibiotic therapy prior to hospitalization did not vitiate the validity of the test.
  • (5) The following is concluded: (1) diagnosis of folate and B12 deficiency based on SF, RCF and serum B12 is vitiated in HBT and needs a therapeutic trial; (2) iron overload of a magnitude indicated by TS greater than 50% can aggravate anemia in HBT.
  • (6) The technique is simple but the results may be vitiated by the minutae of preservation, of taking or of staining the cells which are described.
  • (7) Some of the previous results (Ascenzi et al., 1985) indicating a high hemoglobin titer were +vitiated because of an unexpected cross-reactivity of bone extracts with the hemoglobin-unreactive fraction of the antiserum.
  • (8) The authors have classified the various fractures of the pelvis in children by analysing the elements of functional prognosis of these lesions based on the types of fractures and on the particular factors of vitiation reported in the literature, consisting of series which are too short to be truly demonstrative.
  • (9) While the physiological role of these proteins remains to be determined, their presence in gonadal extracts or fluids vitiates assessment of FSH within the gonad by RIA using antiserum against hFSH.
  • (10) It was also found that the protective effect is vitiated by the concurrent administration of paraaminobenzoic acid.These studies indicate a need for further assessment of the antimalarial value of sulfones and sulfonamides, both alone and in combination with other drugs, for prevention and cure.
  • (11) In particular, the extent to which the generality of the model is vitiated by its ignoring the effect of mineralisation on strength was tested.
  • (12) These conclusions are not vitiated by differences in the number of nuclei within capillaries or in satellite cells, by differences in nuclear length or by variation in the degree to which fibres are contracted.
  • (13) Infection or ileal conduit urine vitiate the result as they produce high CEA levels in the urine in the absence of any neoplastic disease.
  • (14) It is argued that despite continued methodological improvements, subjects in the conditions of greater complexity may have found it sufficient to rotate only partial images, thereby vitiating the prediction.
  • (15) The failed bid by prime minister Antonis Samaras to throw off the yoke of international supervision by prematurely exiting the bailout programme has also vitiated his fragile government’s appeal.
  • (16) An investigation of the risky shift phenomenon revealed that an understanding of probability did not vitiate the shift toward greater risk.
  • (17) The several factors which do not depend directly on the orifice area or on the forward stroke volume vitiate the sole use of the orifice formula in the analysis of the dynamics of aortic stenosis.
  • (18) Mutations not detectable by analysis with the method of Southern with pDP1007, may occur in the testicular determinant factor gene vitiating testicular development.
  • (19) It is believed that a.m. are an important drawback contributing to vitiate any formula on the amount of muscle surgery to be performed in patients having no possibilities of restoring normal binocular vision.
  • (20) The stimulatory effect was vitiated by cycloheximide indicating the involvement of intermediate genes in the PLP gene activation.

Weaken


Definition:

  • (v. t.) To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; to enervate; as, to weaken the body or the mind; to weaken the hands of a magistrate; to weaken the force of an objection or an argument.
  • (v. t.) To reduce in quality, strength, or spirit; as, to weaken tea; to weaken any solution or decoction.
  • (v. i.) To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened; the witness weakened on cross-examination.

Example Sentences:

  • (1) Now, as the Senate takes up a weakened House bill along with the House's strengthened backdoor-proof amendment, it's time to put focus back on sweeping reform.
  • (2) The use of functional test with the ACTH administration demonstrated organic affection of the CNS to sharply aggravate the weakening and even the exhaustion of the functional reserves of the glomerular and the reticular zones of the adrenal cortex developing during thyrotoxicosis, and also the reserve possibilities of the sympathico-adrenal system.
  • (3) If Lagarde had been placed under formal investigation in the Tapie case, it would have risked weakening her position and further embarrassing both the IMF and France by heaping more judicial worries on a key figure on the international stage.
  • (4) The stronger negative potentials may weaken electrostatic receptor interactions and, thereby, cause the trans(E)-isomers to be less active than cis(Z)-isomers.
  • (5) We found that the closer location of Mg2+ to the beta-phosphoryl group than to the alpha- or gamma-phosphoryl group was effective in weakening the P-O bond at which the cleavage of ATP catalyzed by most enzymes takes place.
  • (6) Extracellular potassium increases this component of the potassium current as a result of weakening of its inactivation.
  • (7) Moreover, the effect of its administration gradually weakens with repeating of the stress inducing experiment, and propiopromazine itself may act as a stress inducing factor.
  • (8) He was accused of disrespecting the FA Cup with such a weakened team but he mounted a strong defence, referencing the club’s seven injuries that have left him with only 13 fit senior outfield players.
  • (9) sec.-1); b) an enhancement of fast (15-25 Hz) oscillations in the cortical spontaneous electrical activity and weakening and modification of the effects of the blockader of synthesis of MA-alpha-methyl-dioxiphenylalanine.
  • (10) The muscle weakening procedures by the traditional recession should be avoided.
  • (11) Repeated flashes above a few per second do not so much cause fatigue of the VEPs as reduce or prevent them by a sustained inhibition; large late waves are released as a rebound excitation any time the train of flashes stops or is delayed or sufficiently weakened.
  • (12) Levin and Merkley said Wall Street has successfully managed to weaken the rule.
  • (13) Any process which weakens the cartilaginous endplate or the subchondral cancellous bone may predispose to the development of Schmorl's nodes.
  • (14) The dumping-syndrome is a severe complication of gastric surgery after operations which destroy or weaken the sphincter mechanism of the pylorus.
  • (15) The destabilization of the red cell membrane skeleton in the presence of crude iHCR is caused by release of hemin, which lowers the stability of membrane skeleton by weakening the spectrin-protein 4.1-actin interaction.
  • (16) We therefore conclude that in postrigor muscles, paratropomyosin is released from the A-I junction region following the increase in the sarcoplasmic calcium ion concentration to 10(-4) M, and then binds to thin filaments, which results in weakening of rigor linkages formed between actin and myosin.
  • (17) Companies like Origin and EnergyAustralia are pushing to weaken the target not, as they like to claim, because that would be good for customers, but because a weaker target is better for their bottom line,” Connor said.
  • (18) The centrally generated ;effort' or direct voluntary command to motoneurones required to lift a weight was studied using a simple weight-matching task when the muscles lifting a reference weight were weakened.
  • (19) One possibility is that the membrane of dystrophic muscle is weakened and becomes leaky to Ca2+.
  • (20) David Cameron thought that the SNP would weaken Labour north of the border.