What's the difference between reverse and undo?

Reverse


Definition:

  • (a.) Turned backward; having a contrary or opposite direction; hence; opposite or contrary in kind; as, the reverse order or method.
  • (a.) Turned upside down; greatly disturbed.
  • (a.) Reversed; as, a reverse shell.
  • (a.) That which appears or is presented when anything, as a lance, a line, a course of conduct, etc., is reverted or turned contrary to its natural direction.
  • (a.) That which is directly opposite or contrary to something else; a contrary; an opposite.
  • (a.) The act of reversing; complete change; reversal; hence, total change in circumstances or character; especially, a change from better to worse; misfortune; a check or defeat; as, the enemy met with a reverse.
  • (a.) The back side; as, the reverse of a drum or trench; the reverse of a medal or coin, that is, the side opposite to the obverse. See Obverse.
  • (a.) A thrust in fencing made with a backward turn of the hand; a backhanded stroke.
  • (a.) A turn or fold made in bandaging, by which the direction of the bandage is changed.
  • (a.) To turn back; to cause to face in a contrary direction; to cause to depart.
  • (a.) To cause to return; to recall.
  • (a.) To change totally; to alter to the opposite.
  • (a.) To turn upside down; to invert.
  • (a.) Hence, to overthrow; to subvert.
  • (a.) To overthrow by a contrary decision; to make void; to under or annual for error; as, to reverse a judgment, sentence, or decree.
  • (v. i.) To return; to revert.
  • (v. i.) To become or be reversed.

Example Sentences:

  • (1) This trend appeared to reverse itself in the low dose animals after 3 hr, whereas in the high dose group, cardiac output continued to decline.
  • (2) Application of 40 microM NiCl2 reversibly blocked It while leaving Is intact, whereas 20 microM CdCl2 reversibly blocked Is, but not It.
  • (3) The outward currents are sensitive to TEA and their reversal potentials differ.
  • (4) With NaCl as the major constituent of the bathing solution (potassium-free pipette and external solutions) the reversal potential (Er) of the noradrenaline-evoked current was about 0 mV.
  • (5) The HBV infection was tested by the reversed passive hemagglutination method for the HBsAg and by the passive hemagglutination method for the anti-HBs at the time of recruitment in 1984.
  • (6) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
  • (7) Tests showed the cells survive and function normally in animals and reverse movement problems caused by Parkinson's in monkeys.
  • (8) In dorsoventral (DV) reversed wings at both shoulder or flank level, the motor axons do not alter their course as they enter the graft.
  • (9) Head-injured patients had a low thyroxine (T4), low triiodothyronine (T3), and high reverse T3.
  • (10) Dilutional studies comparing the mechanism of inhibition of monoamine oxidase produced by Gerovital H3 and by ipronizid demonstrated that Gerovital H3 was a reversible inhibitor of monoamine oxidase.
  • (11) Nucleotide, which is essential for catalysis, greatly enhances the binding of IpOHA by the reductoisomerase, with NADPH (normally present during the enzyme's rearrangement step, i.e., conversion of a beta-keto acid into an alpha-keto acid, in either the forward or reverse physiological reactions) being more effective than NADP.
  • (12) An axillo-axillary bypass procedure was performed in a high-risk patient with innominate arterial stenosis who had repeated episodes of transient cerebral ischemia due to decreased blood flow through the right carotid artery and reversal of blood flow through the right vertebral artery.
  • (13) What reforms there were could also be reversed, she warned.
  • (14) No reversions to wild-type levels were observed in 555 heterozygous offspring of crosses between homozygous Campines and normals.
  • (15) We have compared two new methods (a solvent extraction technique and a method involving a disposable, pre-packed reverse phase chromatography cartridge) with the standard method for determining the radiochemical purity of 99Tcm-HMPAO.
  • (16) Sickle and normal discocytes both showed membrane elasticity with reversion to original cell shape following release of the cell from its aspirated position at the pipette tip.
  • (17) These antagonists reverse NMDA-mediated long term influence in these brain areas.
  • (18) For dental procedures requiring tracheal intubation, one could perhaps use non-depolarizing muscle relaxants, like pancuronium, with reversal at the end of the procedure.
  • (19) We have recently described a nonnucleoside compound that specifically inhibits the reverse transcriptase of human immunodeficiency virus type 1 (HIV-1), the causative agent of AIDS.
  • (20) We have investigated some of the factors which affect the retention times of these substances in reversed-phase HPLC on columns of 5-micron octadecylsilyl silica.

Undo


Definition:

  • (v. t.) To reverse, as what has been done; to annul; to bring to naught.
  • (v. t.) To loose; to open; to take to piece; to unfasten; to untie; hence, to unravel; to solve; as, to undo a knot; to undo a puzzling question; to undo a riddle.
  • (v. t.) To bring to poverty; to impoverish; to ruin, as in reputation, morals, hopes, or the like; as, many are undone by unavoidable losses, but more undo themselves by vices and dissipation, or by indolence.

Example Sentences:

  • (1) We cannot undo the damage it ha€™s done to our air quality,” she said.
  • (2) I am not a Muslim but I see that the cover has been read as yet more provocation, even an undoing of the unity of the marches in Paris and other cities.
  • (3) Amid public outcry over the Bettencourt case, Sarkozy is now likely to be forced into a U-turn before the next election, undoing his tax reforms.
  • (4) His interventions over the next week - first with the miners then with his former army colleagues as hundreds of thousands took to the streets of Belgrade - would prove his ex-master's undoing.
  • (5) He told the chair, Alexis Jay: “We will never be able to undo the wrongdoing to these children.
  • (6) But the role opened my eyes to certain aspects of online gaming, such as harassment, abuse, threats and even stalking, and in many ways, it is an unhappy experience that I wish I could undo.
  • (7) With three weeks left to election day, the onus is on Obama to mount a strong comeback in Tuesday's Long Island debate to undo some of the damage caused by his dismal showing in the first of the presidential debates in Denver a fortnight ago.
  • (8) Obama won praise from world leaders for his promises to undo George Bush's environmental record, but there is growing scepticism abroad that Democrats will be able to overcome opposition in Congress and pass legislation that would put America on a path to cutting its carbon emissions.
  • (9) Arab regional governments – and even Iran – have belatedly seen their own storm clouds of extremism, but there is tremendous work required to undo what has been done.
  • (10) All efforts to undo environmental protections put in place by Obama, he said, would face lengthy and compulsory processes of consultation and review, as well as the strongest possible legal challenges at every turn.
  • (11) President-elect Trump will be able to undo the programs and cast them into the dustbin of history with equal speed and ease.
  • (12) Against the top sides England will leak goals, and that will ultimately be our undoing.
  • (13) He is praised for responding to a chemical attack in Syria with airstrikes, for generally projecting strength in foreign policy, for undoing Obama-era regulations on the environment and business, for installing a conservative supreme court justice, for protecting American jobs, and for not letting people tell him what he can’t do.
  • (14) Now Google might be required to undo the changes – although Auke Haagsma, a lawyer advising the lobby group Icomp , which is critical of Google's policies, said that would be like trying to "unscramble the egg".
  • (15) The projected increase in 2016 would return poverty rates to their 2007 levels, undoing nearly a decade’s worth of gains,” the report stated.
  • (16) Labour cannot afford to undo the coalition's cuts in the next government and must expect to be unpopular, one of the party's most senior finance spokesmen will say on Friday.
  • (17) Jeremy’s main fault was his unfortunate choice of friends – notably Peter Bessell MP, who jointly and foolishly entered into the long-running payoff drama with Scott which was his undoing.
  • (18) It has helped cement Qatar’s international reach and legitimacy, yet ironically has now played a part in its undoing.
  • (19) The former Irish prime minister John Bruton says it would “undo much of the work of the peace process and create huge questions over borders and labour market access”.
  • (20) The author examines how these negative affects, the accompanying victim role, and oppositional defiance enable angry adolescents to defend against depression and loss, to demand nurturance from others, to protect their precarious inner autonomy, and to undo their humiliation and shame by vengeance and reversal.