单词 | trans- |
释义 | trans-prefix The chief uses are as follows: 1. With the sense ‘across, through, over, to or on the other side of, beyond, outside of, from one place, person, thing, or state to another’: in verbs and their derivative nouns and adjectives representing Latin compounds, or formed etymologically on Latin elements; e.g. transcolate, transcribe, transcript, transcription, transport, transportation. 2. in verbs, etc. formed on English verbs, adjectives, or nouns, as transboard, transearth, transfashion, tranship, trans-shape, transtime. 3. in adjectives and their derivatives, representing Latin adjectives, or formed analogically on Latin words, as transmarine, transmural; also on English nouns or adjectives, as trans-border, -desert, -frontier, -polar. These may have the sense ‘across, crossing’, or ‘beyond, on the other side of’, or both senses, as trans-oceanic. Special groups are: 4. in adjectives with the sense ‘beyond, surpassing, transcending’, as transhuman, -material, -rational. 5. a. in adjectives, scientific terms (chiefly anatomical), with the sense ‘through, across’ (the thing denoted by the noun implied). See also transapical adj., transfrontal adj., transocular adj., transuterine adj. transabdominal adj. Brit. /ˌtrɑːnzəbˈdɒmᵻnl/ , /ˌtranzəbˈdɒmᵻnl/ , /ˌtrɑːnsəbˈdɒmᵻnl/ , /ˌtransəbˈdɒmᵻnl/ , U.S. /ˌtrænzəbˈdɑmən(ə)l/ , /ˌtræn(t)səbˈdɑmən(ə)l/ ΚΠ 1956 Nature 18 Feb. 330/2 Although transabdominal puncture of the uterus has been carried out often for therapeutic and experimental reasons without accidents, mere curiosity does not justify the procedure. transantral adj. Brit. /ˌtrɑːnzˈantr(ə)l/ , /ˌtranzˈantr(ə)l/ , /ˌtrɑːnsˈantr(ə)l/ , /ˌtransˈantr(ə)l/ , U.S. /ˌtrænzˈæntrəl/ , /ˌtræn(t)sˈæntrəl/ [antrum n.] ΚΠ 1957 Laryngoscope LXVII. 566 The degree of orbital tension present in the severe forms of exophthalmos is correlated with the degree of recession obtained by the transantral decompression. transcapillary adj. Brit. /ˌtrɑːnskəˈpɪləri/ , /ˌtranskəˈpɪləri/ , U.S. /ˌtræn(t)sˈkæpəˌlɛri/ ΚΠ 1974 Nature 31 May 495/3 Transcapillary and transepithelial water transport. transcervical adj. Brit. /ˌtrɑːn(s)səˈvʌɪkl/ , /ˌtrɑːn(s)ˈsəːvᵻkl/ , /ˌtran(s)səˈvʌɪkl/ , /ˌtran(s)ˈsəːvᵻkl/ , U.S. /ˌtræn(t)(s)ˈsərvək(ə)l/ ΚΠ 1963 Lancet 19 Jan. 165/2 Transcervical fractures. transcutaneous adj. Brit. /ˌtrɑːnskjuːˈteɪnɪəs/ , /ˌtranskjuːˈteɪnɪəs/ , U.S. /ˌtræn(t)sˌkjuˈteɪniəs/ ΚΠ 1977 Lancet 7 May 983/1 We believe that local warming of the skin and of the capillary blood under the electrode increases Pco2; the trans~cutaneous Pco2 values are therefore higher than those found in arterial blood. transduodenal adj. Brit. /ˌtrɑːnzdjuːəˈdiːnl/ , /ˌtranzdjuːəˈdiːnl/ , /ˌtrɑːnsdjuːəˈdiːnl/ , /ˌtransdjuːəˈdiːnl/ , U.S. /ˌtrænzˌd(j)uəˈdin(ə)l/ , /ˌtrænzduˈɑdn̩(ə)l/ , /ˌtræn(t)sˌd(j)uəˈdin(ə)l/ , /ˌtræn(t)sduˈɑdn̩(ə)l/ ΚΠ 1908 Practitioner Dec. 827 I am inclined to think that transduodenal or retro-duodenal operations for this condition should be avoidable. 1975 H. J. Burhenne in Najarian & Delaney Surg. Liver, Pancreas & Biliary Tract 104 Percutaneous cholangiography will probably be supplanted by transduodenal cannulization. transepithelial adj. Brit. /ˌtrɑːnzɛpᵻˈθiːlɪəl/ , /ˌtranzɛpᵻˈθiːlɪəl/ , /ˌtrɑːnsɛpᵻˈθiːlɪəl/ , /ˌtransɛpᵻˈθiːlɪəl/ , U.S. /ˌtrænzˌɛpəˈθiliəl/ , /ˌtræn(t)sˌɛpəˈθiliəl/ ΚΠ 1974Transepithelial [see transcapillary adj.]. transglottal adj. Brit. /ˌtrɑːnzˈɡlɒtl/ , /ˌtranzˈɡlɒtl/ , /ˌtrɑːnsˈɡlɒtl/ , /ˌtransˈɡlɒtl/ , U.S. /ˌtrænzˈɡlɑdl/ , /ˌtræn(t)sˈɡlɑdl/ ΚΠ 1964 J. C. Catford in D. Abercombie et al. Daniel Jones 31 The trans-glottal air-jets of voice superimpose a periodic fluctuation on the mean air pressure behind the articulatory stricture, resulting in..hiss. 1970 Language 46 313 The human..larynx is so constructed that the fundamental frequency of phonation is a function of both the transglottal air pressure drop and the tensions of the laryngeal muscles. transgranular adj. Brit. /ˌtrɑːnzˈɡranjᵿlə/ , /ˌtranzˈɡranjᵿlə/ , /ˌtrɑːnsˈɡranjᵿlə/ , /ˌtransˈɡranjᵿlə/ , U.S. /ˌtrænzˈɡrænjələr/ , /ˌtræn(t)sˈɡrænjələr/ ΚΠ 1962 Sci. Surv. 3 329 Occasionally the cracks are transcrystalline (trans-granular). transovarial adj. Brit. /ˌtrɑːnzə(ʊ)ˈvɛːrɪəl/ , /ˌtranzə(ʊ)ˈvɛːrɪəl/ , /ˌtrɑːnsə(ʊ)ˈvɛːrɪəl/ , /ˌtransə(ʊ)ˈvɛːrɪəl/ , U.S. /ˌtrænzˌoʊˈvɛriəl/ , /ˌtræn(t)sˌoʊˈvɛriəl/ ΚΠ 1946 E. A. Steinhaus Insect Microbiol. viii. 439 Transovarial transmission of the virus takes place by the viruses penetrating the walls of the ovary and thence entering the developing ovum. 1971 P. C. C. Garnham Progress in Parasitol. iii. 34 The tick..may carry over into subsequent generations by transovarial passage. transovarian adj. Brit. /ˌtrɑːnzə(ʊ)ˈvɛːrɪən/ , /ˌtranzə(ʊ)ˈvɛːrɪən/ , /ˌtrɑːnsə(ʊ)ˈvɛːrɪən/ , /ˌtransə(ʊ)ˈvɛːrɪən/ , U.S. /ˌtrænzˌoʊˈvɛriən/ , /ˌtræn(t)sˌoʊˈvɛriən/ ΚΠ 1954 Jrnl. Infectious Dis. 95 178/2 The distribution of antibodies in different small age groups of wild birds is further evidence of the transovarian passage of neutralizing antibodies. 1980 Nature 7 Feb. 568/2 Another event occurring during oogenesis is trans-ovarian transmission of symbiotic bacteroids..from females to the oocytes. transplacental adj. Brit. /ˌtrɑːnspləˈsɛntl/ , /ˌtranspləˈsɛntl/ , U.S. /ˌtræn(t)spləˈsɛn(t)l/ ΚΠ 1902 Brit. Med. Jrnl. 17 May 1198/1 Alterations in the transplacental interchanges. 1977 Lancet 9 Apr. 795/1 The transplacental leak of fetal red blood-cells. transpyloric adj. Brit. /ˌtrɑːnspʌɪˈlɒrɪk/ , /ˌtranspʌɪˈlɒrɪk/ , U.S. /ˌtræn(t)sˌpaɪˈlɔrɪk/ ΚΠ 1905 C. Addison Ellis's Demonstr. Anat. (ed. 12) vi. 298 This plane, from its traversing the pyloric end of the stomach, is called the transpyloric. 1977 Lancet 28 May 1157/2 The gastric distension..can be relieved by passing an open-ended nasogastric tube, and adequate nutrition maintained by intravenous or continuous transpyloric feeding. b. In derived adverbs. transabdominally adv. Brit. /ˌtrɑːnzəbˈdɒmᵻnl̩i/ , /ˌtranzəbˈdɒmᵻnl̩i/ , /ˌtrɑːnsəbˈdɒmᵻnl̩i/ , /ˌtransəbˈdɒmᵻnl̩i/ , U.S. /ˌtrænzəbˈdɑmənəli/ , /ˌtræn(t)səbˈdɑmənəli/ ΚΠ 1962 Lancet 8 Dec. 1208/2 A needle passed transabdominally into the liver. transduodenally adv. Brit. /ˌtrɑːnzdjuːəˈdiːnl̩i/ , /ˌtranzdjuːəˈdiːnl̩i/ , /ˌtrɑːnsdjuːəˈdiːnl̩i/ , /ˌtransdjuːəˈdiːnl̩i/ , U.S. /ˌtrænzˌd(j)uəˈdinəli/ , /ˌtrænzduˈɑdn̩əli/ , /ˌtræn(t)sˌd(j)uəˈdinəli/ , /ˌtræn(t)sduˈɑdn̩əli/ ΚΠ 1955 Radiology 64 325 When the sphincter of Oddi is sectioned transduodenally, a plastic tube can be inserted into the main pancreatic duct. transovarially adv. Brit. /ˌtrɑːnzə(ʊ)ˈvɛːrɪəli/ , /ˌtranzə(ʊ)ˈvɛːrɪəli/ , /ˌtrɑːnsə(ʊ)ˈvɛːrɪəli/ , /ˌtransə(ʊ)ˈvɛːrɪəli/ , U.S. /ˌtrænzˌoʊˈvɛriəli/ , /ˌtræn(t)sˌoʊˈvɛriəli/ ΚΠ 1954 Jrnl. Infectious Dis. 95 168/1 Neutralizing antibodies to western equine encephalitis (WEE) and St. Louis encephalitis (SLE) viruses may be transmitted transovarially. 1979 Amer. Jrnl. Trop. Med. & Hygiene 28 1064 Spores developing in transovarially infected mosquitoes. transplacentally adv. Brit. /ˌtrɑːnspləˈsɛntəli/ , /ˌtrɑːnspləˈsɛntl̩i/ , /ˌtranspləˈsɛntəli/ , /ˌtranspləˈsɛntl̩i/ , U.S. /ˌtræn(t)spləˈsɛn(t)l̩i/ ΚΠ 1965 Dorland's Med. Dict. (ed. 24) at Listeria A septicemic disease which may be transmitted transplacentally in pregnant women. Categories » 6. in substantives with the sense ‘transverse’, as trans-muscle, trans-stroke. (rare.) 7. a. in geographical adjectives, formed on the names of rivers, seas, mountains, territories, etc., with the sense ‘situated or lying beyond or on the other side of’, as trans-Adriatic, trans-Alleghanian, trans-Alleghany, trans-Altaian, trans-Baikal, trans-Baikalian, trans-Cantine (the river Cam), trans-Caspian, trans-Caucasian, trans-Danubian, trans-Egyptian, trans-Euphrates ( trans-Euphratesian, trans-Euphratic), trans-Gangetic (Ganges), trans-Grampian, trans-Indus, trans-Indine, trans-Jordan, trans-Jordanic, trans-Juran (Mt. Jura), trans-Mersey, trans-Mississippi, trans-Mississippian, trans-Mosan (R. Meuse), trans-Pyrenean, trans-Severn, trans-Tiberine (also trans-Teverine, Italian trasteverino), trans-Trentane (R. Trent), trans-Ural, trans-Volga, trans-Zambesian, etc. Also from names of planets, Trans-Martian, trans-Neptunian, trans-Uranian, and in humorous nonce-use, as trans-bedpost. (See also transatlantic adj. and n., trans-Pacific adj., Transkei n., Transleithan adj.) ΚΠ 1612 M. Drayton Poly-olbion viii. 120 The Clees, like louing Twinnes,..that stand Trans-Seuerned, behold fair England tow'rds the rise. a1641 R. Montagu Acts & Monuments (1642) 144 Satrapaes of the Transeuphratesian Countreyes. 1655 T. Fuller Hist. Univ. Cambr. vi. 99 in Church-hist. Brit. Monks Colledge..stood on the trans-Cantine side, an Anchoret in it self, severed by the River from the rest of the University. 1756 C. Lucas Ess. Waters ii. 113 The transmosan territories of Liege. 1797 Cambr. Univ. Cal. 18 That there cannot be a majority of transtrentane, or men born north of the Trent in the seniority. 1802 A. Ranken Hist. France III. i. iii. 30 Burgundy Transjurane..now fell under the superiority of Germany. 1814 Deb. Congr. U.S. 14 Feb. 1422 Even then the trans-Alleganean wilderness was rustling with the preparation of the savage. 1815 J. Adams Wks. (1856) X. 168 Our trans-Alleghanian States, in patriotism,..are at least equal to any in the Union. 1817 H. T. Colebrooke in Trans. Linn. Soc. 12 352 Between the cis-gangetic and trans-gangetic regions. 1825 C. D. Colden Mem. 93 Why should the trans-Allegany States have remained united with those on the Atlantic? 1828 G. S. Faber Sacred Cal. Prophecy II. iii. iii. 116 The transdanubian and transeuphratic conquests of Trajan. 1831 A. Wilson Amer. Ornithol. IV. 31 In the trans-Mississippian territories of the United States, the burrowing owl resides. 1836 F. Mahony Barry in Rel. Father Prout (1859) 503 Of an old transtiberine family, he claimed with the trasteverini unconditionated pedigree. 1840 H. H. Milman Hist. Christianity I. 177 On the remote border of his transjordanic territory. 1845 S. Austin tr. L. von Ranke Hist. Reformation in Germany (ed. 2) II. 445 The generals now, under the eyes of the pope, demanded..as security for payment, the Transteverine city. 1854 H. H. Milman Hist. Lat. Christianity II. iv. ix. 212 Leo revenged himself by severing the Transadriatic provinces..from the Roman patriarchate. 1861 J. G. Sheppard Fall of Rome i. 22 Pannonia was nearly equivalent to trans-Danubian Hungary. 1865 H. B. Tristram Land of Israel xxii. 519 We mounted for our trans-Jordanic expedition. 1875 Harper's Mag. Mar. 572/2 The subdivision..into the Trans-Alleghany, Valley, Middle, and Tide-water districts. 1876 J. S. Blackie Lang. & Lit. Sc. Highlands 40 The quick sensibilities of trans-Grampian philologers. 1878 W. E. Gladstone Homer i. §12. 15 Homer..gives an account of the trans-Egyptian Pygmæans. 1888 Times 9 Oct. 4/1 These outsiders..will also have to settle peacefully in the Russian Transcaspian. 1898 Westm. Gaz. 14 Feb. 2/1 Glimpses of the Jordan valley and the trans-Jordan hills. 1900 M. C. Wilson Irene Petrie xiii. 305 A Campaign in trans-Himalayan lands. 1903 Sir H. H. Johnston in Times 17 Feb. A Government Department..dealing with foreign (i.e., trans-Zambesian) labour. 1934 A. Toynbee Study of Hist. II. 203 Musa had completed the Arab conquest..by occupying the Trans-pyrenaean province of Septimania along the Gallic coast between the Pyrenees and the Rhône. b. in substantives with the sense ‘the region beyond’ or ‘one dwelling beyond or on the other side of’, as trans-Alleghanian, trans-Mississippi, trans-Mississippian. ΚΠ 1774 J. Adams Diary 23 Oct. (1961) II. 156 I went to the Baptist Church and heard a trans Alleganian—a Preacher, from the back Parts of Virginia. 1883 Cent. Mag. Nov. 142/1 If the President was to attempt to reach the Trans-Mississippi at all,..he should move on at once. 1898 Cent. Mag. Oct. 844/2 The trans-Mississippians have entered upon no line of rural industry with a more intelligent determination to make it a great success than upon dairying. 1949 L. M. Beebe & C. Clegg U.S. West 10 Anyone approaching the matière of the trans-Mississippi in the nineteenth century as an exploiter of new material is either deluded or an imposter. c. Trans-Jordan n. Brit. /trɑːnzˈdʒɔːdn/ , /tranzˈdʒɔːdn/ , /trɑːnsˈdʒɔːdn/ , /transˈdʒɔːdn/ , U.S. /trænzˈdʒɔrdən/ , /træn(t)sˈdʒɔrdən/ historical Transjordania, (a former name for) the district east of the Jordan, under Arab administration and a British mandate.ΚΠ 1927 Daily Tel. 19 July 5/1 The forces for the maintenance of security and the defence of Palestine and Trans-Jordan have been reorganised. Transjordania n. Brit. /ˌtrɑːnzdʒɔːˈdeɪnɪə/ , /ˌtranzdʒɔːˈdeɪnɪə/ , /ˌtrɑːnsdʒɔːˈdeɪnɪə/ , /ˌtransdʒɔːˈdeɪnɪə/ , U.S. /ˌtrænzˌdʒɔrˈdeɪniə/ , /ˌtræn(t)sˌdʒɔrˈdeɪniə/ historical (a former name for) the district east of the Jordan, under Arab administration and a British mandate (also called Trans-Jordan).ΚΠ 1923 Daily Mail 30 Jan. 4 At present the number of Jews in Transjordania is only two. 8. in geographical adjectives, formed as in sense 7, with the sense ‘passing across, crossing’, as in trans-African, trans-Algerian, trans-American, trans-Andean (-ian, -ine), trans-Antarctic, trans-Arabian, trans-Asiatic, trans-Australian, trans-Balkan, trans-Canada, trans-Manchurian, trans-Mersey, trans-Mongolian, trans-Pyrenean, trans-Saharan, trans-Siberian, trans-Sierran, trans-Tasman, etc. Many of these occur also in sense 7. ΚΠ 1846 R. Ford Gatherings from Spain iv. 31 Newfangled transpyrenean reforms, innovations, and botherations. 1880 Nature 4 Mar. 424/2 The future Transalgerian Railway Company. 1884 Notes on Bks. (Longman's) 31 May 247 The Transandine exploring and surveying expedition of 1871–2. 1886 Liverpool Courier 16 Jan. Assisting in opening the trans-Mersey Railway. 1888 Times 20 Sept. 3/6 Denham, Clapperton, Barth, and other trans-Saharan travellers. 1898 Chambers's Jrnl. 1 543/2 8000 feet above sea-level, the highest point to which the Trans-Andean railway had been carried. 1901 Daily Chron. 13 Nov. 3/3 The reported adoption..of the trans-American route for the conveyance of the Australian mails. 1903 Daily Chron. 17 Mar. 6/6 The project of a Trans-Pyrenean railway is thoroughly practicable. 1907 Westm. Gaz. 26 Oct. 16/3 This trans-African voyage of Mr. Savage Landor. 1908 Busy Man's Mag. Apr. 95 The Proposed Route of the Trans-Canada Rail~way. 1908 Edinb. Rev. July 146 The trans-Niger railway, destined to..open up to commerce a magnificent agricultural region. 1916 R. K. Wood Tourist's N.W. 315 A campaign for the improvement and construction of roads which..shall in combination form a trans-Canada motor route. 1933 Geogr. Jrnl. 82 470 Mr. Lincoln Ellsworth..will then make the Transantarctic flight, which is the sole object of the expedition. 1935 E. B. Buckbee Saga Old Tuolumne 385 The road survived until the State of California came to look with favour upon its possibilities as a tran-Sierran [sic] road. 1938 Times 17 Feb. 13/4 The flying-boat Centaurus showed her unsuitability for trans-Tasman traffic. 1950 Pacific Discovery Mar.–Apr. 4/1 Did you know that a trans-Sierran highway is now being built in Madera County? 1963 P. Drackett Motor Rallying iv. 62 The Trans-Canada and Canadian Winter Rallies have not yet reached the lofty eminence of the Safari. 1965 E. McCourt Road across Canada 199 The Trans-Canada Highway is an engineering, communications, and scenic marvel. 1966 N. Marsh Black Beech & Honeydew viii. 175 In..1928 the trans-Tasman steamer sailed..into Cook Strait. 1978 Times Lit. Suppl. 25 Aug. 957/4 Shackleton's unsuccessful transantarctic expedition. 1978 J. Updike Coup (1979) i. 4 The capital is Istiqlal, renamed in 1960, upon independence, and on prior maps called Cailliéville, in honor of the trans-Saharan traveller of 1828. 9. a. Chemistry. (Also without hyphen as a quasi-adj. Usually printed in italic.) Designating a compound in which two atoms or groups are situated on opposite sides of some plane passing through the molecule; hence (of a bond or a reaction), characterized by such a relationship. ΚΠ 1888 A. Baeyer in Liebig's Annalen der Chemie CCXLV. 137 Ich schlage dafür die Bezeichnung ‘cis’ und ‘trans’ vor, welche andeuten sollen, dass der eine Bestandtheil diesseits und der andere jenseits der Ebene des Ringes befindlich ist.] 1892 Jrnl. Chem. Soc. 62 1213 The anhydride of the cis modification invariably melts at a lower temperature than that of the trans form. 1937 Nature 3 July 25/1 The trans form of ethylene bromide is considered to be the more ‘stable’ (preferred) form, even at high temperatures. 1951 C. R. Noller Chem. Carbon Compounds xvii. 316 It has been proved that cis-2-butene is the isomer boiling at 3·73° and trans-2-butene is that boiling at 0·96°. 1956 D. J. Cram in M. S. Newman Steric Effects in Org. Chem. vi. 306 The terms cis elimination will be used whenever the leaving groups depart from the same side of the incipient double bond, and trans elimination when they leave from the opposite side of the incipient double bond. 1972 R. A. Jackson Mechanism i. 7 Bromine adds across an olefinic double bond in a trans manner. 1976 Sci. Amer. Jan. 124/2 Nearly all peptide bonds are trans and planar, meaning that hydrogen and carbonyl oxygen (CO) are on opposite sides of the bond. b. transferred in Genetics, with reference to the location on different chromosomes of dominant alleles of two or more genes or cistrons. ΚΠ 1941 J. B. S. Haldane New Paths in Genetics i. 17 There are two geometrically isomeric types of rabbit (to use a chemical analogy) heterozygous for recessive white c and recessive yellowfat y... The trans-rabbit + y/c + is derived from the crossing of a white-fatted coloured rabbit and a yellow-fatted white. 1957 S. Benzer in McElroy & Glass Chem. Basis Hered. 71 A functional unit can be defined genetically..by means of the elegant cis-trans comparison... For the trans test, both mutant genomes are inserted in the same cell... It turns out that a group of non-complementary mutants falls within a limited segment of the genetic map. Such a map segment, corresponding to a function which is unitary as defined by the cis-trans test applied to the heterocaryon, will be referred to as a ‘cistron’. 1973 R. G. Krueger et al. Introd. Microbiol. xiii. 385/1 In the diploid the two mutants [sc. mutant genes] are said to be trans to one another because they are on different chromosomes. Categories » 10. Biochemistry and Biology. In nouns with the sense ‘transfer’, as transacetylase, -amination, -genosis, -methylation, -peptidation (see as main entries). 11. Physics. In adjectives and nouns with the sense ‘having a higher atomic number than; beyond (in the periodic table)’. ΚΠ 1952 Chem. & Engin. News 21 Jan. 237/2 The trans~californium elements. 1969 Nature 26 Apr. 323/1 Dr Glen Seaborg..was able to proclaim that element 104 is the first of the ‘trans-actinide’ elements. 1973 Q. Jrnl. Royal Astron. Soc. 14 121 The existence of transbismuth elements in nature. Draft additions January 2002 trans-fat n. Brit. /ˈtranzfat/ , /ˈtransfat/ , U.S. /ˈˌtrænzˈˌfæt/ , /ˈˌtræn(t)sˈˌfæt/ fat containing trans-fatty acids.ΚΠ 1978 Artery 4 360 The abdominal aorta of 7 out of 12 swine fed hydrogenated vegetable trans fat had raised lesions. 1994 Runner's World Feb. 26/1 Our insatiable appetite for foods made with vegetable oil has pushed trans-fat intake to an all-time high. 1998 Esquire Mar. 136/3 The group that ate the most ‘trans’ fat faced the worst odds of all—a 53 percent greater risk than the group that ate the least. 1999 J. Elkington & J. Hailes New Foods Guide iii. 67 Evidence is emerging to suggest that trans fats may be even worse for your health than saturated fats because, in addition to raising ‘bad’ LDL cholesterol, they may lower ‘good’ HDL cholesterol. Draft additions January 2002 trans-fatty acid n. Brit. /ˌtransfatɪ ˈasɪd/ , /ˌtranzfatɪ ˈasɪd/ , U.S. /ˌtrænzˌfædi ˈæsəd/ , /ˌtræn(t)sˌfædi ˈæsəd/ a trans ( 9a), as opposed to the naturally occurring cis, stereoisomer of a fatty acid, found esp. in partially hydrogenated margarines and other manufactured cooking fats, and thought to be a dietary risk for atherosclerosis.ΚΠ 1922 Jrnl. Amer. Chem. Soc. 44 147 It is the universally obscure rule that the naturally occurring higher fatty acids of the oleic series are the trans forms. 1924 Jrnl. Soc. Chem. Industry 43 208/1 It is customary to describe oleic acid as the trans-acid for reasons of which we must plead ignorance.] 1953 Arch. Biochem. & Biophysics 46 374 These specimens of summer butterfat were found by infrared examination to contain 9.5–9.7% of trans fatty acids. 1957 Science 11 Oct. 698/3 The shortenings and margarines which include these hydrogenated oils have been reported to contain as much as 23 to 42 percent of trans fatty acids. 1970 Amer. Jrnl. Clin. Nutrition 23 1111 (heading) Incorporation of trans-fatty acids into tissue lipids. 1992 Med. Jrnl. Australia 4 May 156 Trans fatty acids may increase serum cholesterol levels and can be reckoned to be equivalent to saturated fatty acids. 2001 Jrnl. Nutrition 131 242 Consumption of a solid fat rich in lauric acid gives a more favorable serum lipoprotein pattern than consumption of partially hydrogenated soybean oil rich in trans-fatty acids. This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022). < prefix1612 |
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