单词 | reversible |
释义 | reversibleadj.n. A. adj. 1. a. Able or suitable to be reversed; capable of reversing. ΘΚΠ the world > time > change > change to something else, transformation > change of direction, reversion > [adjective] > capable of being reversible1632 returnable1654 remigrable1669 reconvertible1727 resettable1973 the world > space > relative position > inversion > [adjective] > turned the reverse or wrong way > able to be reversible1828 1632 E. Reynolds Explic. 110th Psalme 385 Though the Denuntiation came not to passe, yet was it not any false message, because it was made reversible upon an implicite condition. 1648 H. Hammond Wks. (1683) I. 81 The fate and state of this Kingdom might be a reversible mutable state. 1685 J. Dunton Lett. from New Eng. (1867) 18 If it was not Fate, and so might be reversible, then there was nothing certain in his Art. 1732 J. Bisset Mod. Erastianism Unvailed iv. 187 If they go beyond their Powers, such a Deed is reversible. 1775 W. Kenrick et al. tr. Comte de Buffon Nat. Hist. Animals, Veg., & Minerals III. 420 An inexhaustible and reversible fund of organical and living substances. 1828 J. Stark Elements Nat. Hist. I. 247 Tarsus short, the hind toe reversible. 1861 C. F. Bromley Woman's Wanderings 20 These benches have reversible backs; so that you may sit fronting the engine or not as you prefer. 1921 Cases Argued in Supreme Court Mississippi 516 The action of the lower court is not reversible under the decisions of this court cited above. 1955 Times 25 Oct. 9/3 The reversible lane on ‘tidal’ highways. 2002 News Let. (Belfast) (Nexis) 23 Nov. 8 Share-option fortunes gained by fluky and reversible stock-market fluctuations, tend to give substance to the politics of envy. b. spec. Of a garment or fabric: faced on both sides, so as to be capable of being turned, used, or worn with either side exposed. ΚΠ 1853 Evangelical Advertiser June 32 Reversible Alpaca Coats, Cape and Pouches. 1899 T. Eaton & Co. Catal. Spring–Summer 116/1 Men's reversible coats, made of napa tan leather, lined with heavy drab corduroy. 1924 Boston Daily Globe 11 Dec. 7/4 Reversible jacket, suede on one side, checked material on the other. 1968 J. Ironside Fashion Alphabet 235 Originally the idea was to provide the fabric either with a built-in lining or to make it reversible. 1974 Times 14 Apr. 7/2 The coats and capes..are all reversible with soft knitted mohair on the outside and a sort of super deluxe dishcloth knitting inside. 2001 Sun 27 Jan. (TV Mag.) 8/3 (advt.) This two in one snug fleece jacket..is fully reversible so it will always match your winter outfits. c. Of a propeller: able to provide reverse thrust, typically by reversal of the pitch of the blades while the direction of rotation remains unchanged; of or relating to such propellers. Cf. earlier reversing propeller n. at reversing adj. Compounds. ΚΠ 1862 U.S. Patent 35,219 1/1 A side view of my improved adjustable and reversible propeller. 1883 Chambers's Jrnl. 10 Mar. 160/1 Each of these propellers or floats is reversible. 1923 Rep. Internat. Air. Congr. 588 This propeller is reversible as well as adjustable, and can be used as a brake in landing on rough terrain. 1936 Pop. Sci. Monthly Feb. 19/2 Marine propellers with reversible blades have been perfected. 1989 Hydraulics & Pneumatics June 65 A reversible propeller drive that will be employed in the U.S. Navy's AOE-6 Class Fast Combat Support Ship. 2003 Anchorage (Alaska) Daily News (Nexis) 7 July f1 The fancy German propeller is reversible; Rickerson thinks it's the only one on a single-engine private plane in Alaska. 2. Physics and Chemistry. a. Thermodynamics. Designating a change or process that is capable of reversal, completely and in detail; (strictly) denoting an ideal process in which the system is in equilibrium at each step. Also: relating to or characterized by such a process. ΘΚΠ the world > matter > physics > mechanics > dynamics > thermodynamics > [adjective] > of a change, process, or system: reversible reversible1852 society > occupation and work > equipment > machine > machines which impart power > engine > [adjective] > other qualities or attributes bell-mouthed1797 reverse1839 throttled1850 reversible1852 steam-jacketed1876 multi-cylindera1884 multiple-cylinder1888 four-cycle1909 multi-cylindered1909 knockless1928 throttleable1951 multi-fuel1957 stretched1960 multi-fuelled1964 1852 W. Thomson in Proc. Royal Soc. Edinb. 3 139 When heat is created by a reversible process..there is also a transference from a cold body to a hot body of a quantity of heat. 1878 B. Stewart & P. G. Tait Unseen Universe iii. §106. 118 That an engine whose cycle of operations is reversible is a perfect engine. 1922 R. Glazebrook Dict. Appl. Physics I. 929/1 The expansions and compressions and the transfers of heat that occur in a real engine are never strictly reversible, some of them indeed are far from being reversible. 1958 E. U. Condon & H. Odishaw Handbk. Physics v. 5/1 All reversible engines working between the same two heat reservoirs must have the same efficiency. 1978 P. W. Atkins Physical Chem. ii. 62 In thermodynamics a reversible change is one that can be reversed by an infinitesimal modification of a variable. 1989 Brit. Jrnl. Philos. Sci. 40 507 The overall entropy change is zero only in the limiting case of a reversible process. 1997 R. Decher Direct Energy Conversion i. 7 The Carnot cycle, a reversible cycle involving isothermal heat interactions with the heat source. b. Designating a chemical reaction that in normal circumstances also takes place in the opposite direction, and yields an equilibrium mixture of reactants and products. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to chemical reactions (general) > of or relating to reversible reactions reversible1883 1883 Jrnl. Soc. Chem. Industry 29 Sept. 373/2 The law of Goldberg and Waage regarding the action of mass had hitherto been studied only in the case of reversible chemical reactions. 1899 J. McCrae tr. A. Reychler Outl. Physical Chem. 241 The reversible reaction BaSO4 + K2CO3 ⇌ K2SO4 + BaCO3. 1972 R. A. Jackson Mechanism iv. 85 When aliphatic fluorides are dissolved in antimony pentafluoride, a reversible reaction leads to the formation of carbonium ions. 1996 New Scientist 13 Jan. 4/1 Most biochemical reactions are reversible, and can proceed in either direction depending on the concentration of substrate or product. c. Designating an electrochemical cell in which the chemical reaction can be reversed by the application of a sufficiently large opposing electromotive force; relating to or measured under conditions in which the electromotive force of the cell is balanced by an applied opposite electromotive force, and there is no flow of current.In earlier use in other senses of reversible. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > galvanism, voltaism > [adjective] > capable of reversed action reversible1885 1885 E. Hospitalier in Telegr. Jrnl. & Electr. Rev. 5 Dec. 474/2 We call a reversible battery every battery capable of being regenerated electrolytically. 1895 C. S. Palmer tr. W. Nernst Theoret. Chem. iv. vi. 599 Strictly speaking, all reversible batteries can be used as accumulators. 1957 G. E. Hutchinson Treat. Limnol. I. xi. 693 It is usual to term the actual potential measured the irreversible oxygen potential, while the theoretical value calculated may be termed the reversible oxygen potential. 1977 N. J. Selley Exper. Approach to Electrochem. iv. 63 The value of the applied p.d. for which the current is zero is the ‘reversible cell potential’..for the back reaction. 2001 Wired July 120/2 Advanced methods of energy storage..such as ‘reversible’ fuel cells, supercapacitators, and flywheels. d. Physical Chemistry. Of a colloid or colloidal system: capable of being changed from a gelatinous state into a sol by a reversal of the treatment which turns the sol into a gel or gelatinous precipitate. Of a change of state: characterized by this property. ΘΚΠ the world > matter > chemistry > physical chemistry > colloid > [adjective] > properties irreversible1900 reversible1900 1899 Jrnl. Physiol. 24 175 (heading) Heat-reversible colloidal mixtures.] 1900 W. B. Hardy in Jrnl. Physical Chem. 4 254 (title) On the mechanism of gelation in reversible colloidal systems. 1955 J. Osborne Dental Mech. (ed. 4) i. 18 The cooling process is relatively slow, since all reversible hydrocolloids are bad conductors of heat. 1970 Encycl. Polymer Sci. & Technol. IV. 27 To redissolve reversible colloids, none of those drastic measures are required which are so characteristic of irreversible colloids. 2003 E. Dickinson in E. Dickinson & T. van Vliet Food Colloids, Biopolymers & Materials 71 The formation of a particle gel state from a sol state by reversible aggregation. B. n. A reversible cloth or garment. ΘΚΠ the world > textiles and clothing > clothing > types or styles of clothing > [noun] > manufactured in specific way > other stiff1680 reversible1853 Magyar1912 breathable1961 the world > textiles and clothing > textiles > textile fabric or an article of textile fabric > textile fabric > textile fabric manufactured in specific way > [noun] > double faced Janus-cloth1851 reversible1853 1853 H. Greeley Art & Industry as Represented in Exhib. at Crystal Palace xxi. 229 There is also a specimen of coating resembling a Whitney blanket on one side, and on the other a fine cloth. This is the best display of reversibles. 1875 G. H. Chubb Protection from Fire & Thieves ii. 18 The burglar will often wear a ‘reversible’, or a coat which can be worn inside out. 1952 Billboard 28 June 44/1 Skating Skirts..in Velvets, Corduroys, Luana failles and Plaid Reversibles. 1996 F. Popcorn & L. Marigold Clicking ii. 109 The fence-straddlers are compromising by wearing reversibles, cloth on the outside, the fur hidden discreetly within. Compounds reversible error n. a mistake subject to rectification; (U.S. Law) an error made at trial significant enough to warrant a mistrial or a reversal of the verdict by an appellate court. ΚΠ 1765 Gazetteer & New Daily Advertiser 3 Dec. On the other hand, should this right, so delegated to the colonies, be now considered by any after thought as a reversible error. 1856 Rep. Supreme Court Alabama 28 25 Setting aside juror for cause of challenge, after acceptance, reversible error.—If the court improperly set aside a juror for a cause of challenge on the part of the State which has been lost by previously accepting him, and the prisoner excepts to its decision, the error entitles him to a reversal of the judgment of conviction. 2001 R. Zelnich Winning Florida viii. 126 The evidence in the record against Gore's claim was so overwhelming, it might have constituted reversible error for Sauls to have gone the other way. reversible falls n. = reversing falls n. at reversing adj. Compounds. ΚΠ 1893 Scribner's Mag. Sept. 338/1 The most striking manifestation of the tidal rise and fall is at the mouth of the St. John River... This is locally known as the ‘reversible falls’. 1910 F. Yeigh Through Heart of Canada ii. 36 The famous reversible falls of the St. John River..are best viewed from the suspension bridge. 1995 J. Houston Confessions Igloo Dweller xc. 295 I was skylarking around with tourists visiting the local sights—the best char river, the eider nesting colony, and the reversible falls. reversible-pitch adj. designating a reversible propeller in which the pitch of the blades can be reversed while the direction of rotation remains unchanged. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > means of propulsion > [adjective] > types of propeller feathering1909 reversible-pitch1919 adjustable pitch1934 coaxial1934 1919 Bull. Airplane Engin. Dept. U.S.A. 2 124/1 The design..of a reversible pitch propeller hub is proceeding rapidly. 1951 P. Du Cane High-speed Small Craft xi. 131 Variable (controllable) reversible-pitch propellers have so far been fitted in relatively few experimental craft built in Great Britain. 2000 Virginian-Pilot (Norfolk, Va.) (Nexis) 13 Sept. a1 The ship's controllable reversible pitch propellers and twin rudders were damaged. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < adj.n.1632 |
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