What's the difference between contradict and counteract?

Contradict


Definition:

  • (v. t.) To assert the contrary of; to oppose in words; to take issue with; to gainsay; to deny the truth of, as of a statement or a speaker; to impugn.
  • (v. t.) To be contrary to; to oppose; to resist.
  • (v. i.) To oppose in words; to gainsay; to deny, or assert the contrary of, something.

Example Sentences:

  • (1) We present a mathematical model that is suitable to reconcile this apparent contradiction in the interpretation of the epidemiological data: the observed parallel time series for the spread of AIDS in groups with different risk of infection can be realized by computer simulation, if one assumes that the outbreak of full-blown AIDS only occurs if HIV and a certain infectious coagent (cofactor) CO are present.
  • (2) The pattern of results is consistent with a role for the dorsal bundle in attentional processes but appears to contradict the predictions required if the dorsal bundle were to have a role in frustrative nonreward.
  • (3) The continence achieved in this case seems to be in contradiction to some of the accepted concepts of the mechanisms of continence.
  • (4) The notion of life-threatening dermatoses may seem to be a contradiction in terms, but in fact there are a number of serious dermatologic conditions that require prompt attention to prevent fatal consequences.
  • (5) This is contradicted, however, by maintained blood pressure and pulmonary capillary wedge pressure, increased cardiac output, and reduced peripheral resistance.
  • (6) The observation of myelinated serotonin-containing axons in the white matter of the monkey dorsolateral funiculus contradicts the view that the descending serotoninergic projection consists entirely of unmyelinated fibers, particularly since the conduction velocity of the fine fibers would be too slow to account for the earliest latency of descending inhibition following stimulation in the brainstem.
  • (7) After heading for Rome with his long-term partner, Howard Auster, he returned to fiction with a bestselling novel, Julian, based on the life of a late Roman emperor; a political novel, Washington DC, based on his own family; and Myra Breckinridge, a subversive satire that examined contradictions of gender and sexuality with enough comic brio to become a worldwide bestseller.
  • (8) We suggest that the contradictions can be resolved if one assumes that C1 activation can be both an intra- and intermolecular process; which process dominates is determined by the state of C1 and by experimental conditions.
  • (9) He then went on to contradict the claims made by Attenborough in his own Radio Times article by stating that the polar bear population is, in fact, rising, Antarctic sea ice is expanding, and there was "no global warming at all" in the last quarter of the 20th century.
  • (10) The Muslim Brotherhood, Egypt's largest organised political movement, added its voice to the chorus of discontent, accusing Scaf of contradicting 'all human, religious and patriotic values' with their callousness and warning that the revolution that overthrew former president Hosni Mubarak earlier this year was able to rise again.
  • (11) "Well…" His delightful press secretary, Lena, starts giggling as her boss tries to unknot himself from this contradiction.
  • (12) With respect to the issue of complexity in perception, the findings clearly contradicted the notion that dieters simply dichotomize food into "good" and "bad" categories.
  • (13) Theresa May’s plan for a loose alliance with the Democratic Unionists to prop up her government was thrown into confusion on Saturday night after the Northern Ireland party contradicted a No 10 announcement that a deal had been reached.
  • (14) However, some facts observed contradict the validity of this hypothesis for coronary artery SMC in contrast to taenia caeci: 1) elevation of external Ca2+ concentration did not affect the time course of ICa inactivation; 2) inactivation of In.s., i.e.
  • (15) Merkel’s interior and finance ministers, both in the same party, regularly contradict her.
  • (16) When he had those Aids I went to my synagogue and I prayed for him.” Sterling said he admired Johnson, 53, as a “good” man, then contradicted himself.
  • (17) They want to destroy them all because they know there are lots of discrepancies and contradictions in them."
  • (18) The unexpected announcement by Eric Holder, the attorney general, contradicts Utah’s refusal to recognise some 1,300 same-sex marriages that were licensed during a brief window in December when a federal judge ruled the state’s ban was unconstitutional .
  • (19) According to the results in hand there exists a contradiction to the opinions hitherto existing about a distinct age dependence in the bone structure and distinct sex differences in the findings of the structures of the Ist order.
  • (20) We arrive also to the conclusion that, in contradiction with what we have seen in the literature overview, it seems that narcissistic personality disorders have no negative effect on literary creation.

Counteract


Definition:

  • (v. t.) To act in opposition to; to hinder, defeat, or frustrate, by contrary agency or influence; as, to counteract the effect of medicines; to counteract good advice.

Example Sentences:

  • (1) The origins of aging of higher forms of life, particularly humans, is presented as the consequence of an evolved balance between 4 specific kinds of dysfunction-producing events and 4 kinds of evolved counteracting effects in long-lived forms.
  • (2) Conversely, rat galanin increased unstimulated glucagon output (approximately 20%, P less than 0.05), potentiated the glucagon response to arginine (approximately 50%, P less than 0.05) and VIP (approximately 90%, P less than 0.05), and counteracted the suppressor effect of glucose on alpha-cell secretion.
  • (3) This inhibition is counteracted by the somewhat slower increase of NE turnover resulting in normalization of LH levels.
  • (4) These results suggest that CPZ interacts with smg p21B, smg GDS, or both, and thereby inhibits the smg GDS action, and that CPZ also interacts with the acidic phospholipids and thereby counteracts their inhibitory effect on the smg GDS action.
  • (5) Extracts from arrested cells counteracted the stimulating effects of extracts from proliferating cells with kinetics suggesting competitive interaction between stimulating and inhibitory factors.
  • (6) Acetylcholine increases their turnover, Atropine reduces it, and the addition of atropine counteracts the effect of acetylcholine in all these phospholipids.
  • (7) Whether they affect ureteral motility in vivo or whether they can counteract ureteral spasm associated with ureteral stones have not been established.
  • (8) Metoclopramide did not counteract the apomorphine effect and, in higher doses, water intake was even further reduced.
  • (9) This effect increases with the estrogen dose and is counteracted more effectively by androgenic progestogens such as levonorgestrel than by nonandrogenic progestogens such as desogestrel.
  • (10) PGE2 counteracted the NA-effect in the former group of patients but did not affect the influence of NA at term.
  • (11) Addition of heme in vitro (10(-6)M) to the latter nuclei results in a significant counteraction of the decreased cytochrome P-450 (c + d) mRNA transcription.
  • (12) Two functions of these have been proposed: 1) that they are compatible osmolytes which regulate cell volume (against high external NaCl) without inhibiting proteins and 2) that methylamines (GPC and betaine) are counteracting osmolytes which stabilize proteins against perturbation from high renal urea.
  • (13) For this rather large pressures (about 700 hPa) are required to overcome the surface forces counteracting droplet formation.
  • (14) The drop in the blood-sugar levels was counteracted by corresponding infusions of glucose by the BIOSTATOR via a special clamp technique.
  • (15) In the wild strain (Em 5297a) thiourea is tenfold more toxic on an allantoin medium than on an inorganic nitrogen medium; allantoin as well as urea counteract thiourea toxicity in the allantoin nitrogen medium.
  • (16) Retinal traction can be counteracted by the oil up to a calculated threshold value, depending on the size and shape of the tear, the strength of the surface tension and, most importantly, the distance between the retina and choroid.
  • (17) Some of the changes found may be a result of adaptive mechanisms occurring in order to counteract the different biophysical effects of ethanol.
  • (18) This study evaluates whether suturing of replaced flaps with crown-attached sutures, following reconstructive surgery, counteracts postoperative recession of the gingival margins and facilitates new attachment.
  • (19) In the present article is shown that the histamine releasing effect is counteracted by the addition of histamine to the superfusion fluid.
  • (20) This barrier effect was partially counteracted by monensin or carbonyl cyanide m-chlorophenylhydrazone.