| 释义 |
ter-|tɜː(r)|
the L. adv. ter ‘thrice’, in comb.
1. a. Prefixed to adjs., in sense ‘thrice, three times’, as ter-ˈtrinal, consisting of three sets of three; also expressing a high degree, as ter-ˈsacred [L. ter sacer], thrice sacred.
1600W. Watson Decacordon (1602) Pref. A vj b, The tersacred Apostolicall Romane Church. Ibid. 7 Directing his hand to that tender tersacred and euer blessed heart. 1876T. Le M. Douse Grimm's L. §25. 53 It is certain that the symmetrical ter-trinal trinity constituted by all these three systems together cannot have existed from all time.
b. Prefixed to adjs. and ns.: expressing threefold recurrence or continuance; as ter-diˈurnal a., occurring or done thrice a day; ter-ˈmillenary [after tercentenary], a three-thousandth anniversary.
1892Ld. Kelvin Presid. Addr. R. Soc. 30 Nov., The largeness of the solar semi-diurnal, ter-diurnal, and quarter-diurnal constituents found by the harmonic analysis. 1864Realm 15 June 6 The festivities held there by so many millions of our dusky fellow-subjects in honour of the ter⁓millenary of that sweet swan of Nerbudda.
c. See also tercentenary, tergeminate, etc.
2. Chem.
a. With the names of classes of compounds, as acetate, bromide, chloride, chromate, fluoride, iodate, nitrate, oxide, sulphate, tannate, etc., expressing the presence of three atoms, molecules, or combining equivalents of the element or radical indicated by the rest of the word, as nitrogen terchloride, NCl3, potassium terchromate, K2O.3CrO3, or K2Cr3O10, ternitrate of bismuth, Bi(NO3)3, etc. Now mostly superseded by tri-.
1836Brande Chem. (ed. 4) 773 Terchloride of Chromium. (Chr+O3C.) 1838T. Thomson Chem. Org. Bodies 258 It is..a tertannate. 1849D. Campbell Inorg. Chem. 111 Besides this iodate of potash, there are other two, namely, a biniodate and a teriodate. 1853W. Gregory Inorg. Chem. (ed. 3) 240 Antimony... This valuable metal is chiefly found in the mineral called antimony, which is a tersulphuret, SbS3. 1853Ure Dict. Arts I. 1058 The explosive compound, the teriodide of nitrogen. 1856Miller Elem. Chem. II. 914 Terfluoride of chromium forms deep red fumes of chromic acid. 1869Roscoe Elem. Chem. 230 A third salt, termed ter-chromate [ed. 1882 trichromate], K2Cr3O10, crystallizes out. 1883Hardwich's Photogr. Chem. (ed. Taylor) 55 There are two Chlorides of Gold—viz., the Protochloride and the Terchloride. The latter is the one used in Photography.
b. In other compounds, as † ter-aˈtomic a., of three atoms, triatomic; ter-eˈquivalent a. = trivalent; termoˈlecular a., involving three molecules; terˈpolymer, a polymer whose molecule is composed of three different monomers; hence terˌpolymeriˈzation, polymerization in which three different monomers go to form a terpolymer; ˈtervalence = trivalence; ˈtervalent a. = trivalent.
1860Frankland in Q. Jrnl. Chem. Soc. XIII. 192 Organo-metallic compounds..are uniatomic, biatomic, teratomic, or quadratomic, according to the number of molecules requisite to complete their saturation.
1866Macadam G. Wilson's Inorg. Chem. §1109 The Triatomic, Trihydric, or Terequivalent (Terivalent) elements.
1901Jrnl. Chem. Soc. LXXIX. i. 229 Even in darkness the action is termolecular. 1931Maass & Steacie Introd. Princ. Physical Chem. xii. 199 The reaction between nitric oxide and chlorine is an example of a termolecular reaction. 1974Nature 19 Apr. 666/2 The dimer must be formed by a termolecular collision.
1961Webster, Terpolymer. 1967New Scientist 18 May 423/3 Terpolymers (e.g. ABS plastics) are in use already. 1975Sci. Amer. Oct. 54/3 The three products that proved to be most broadly successful are generically classified as a urethane, a dimethyl silicone and a styrene acrylonitrile terpolymer.
1964Jrnl. Polymer Sci. A. II. 2740 Penultimate effects in copolymerization can be determined more precisely from composition studies in terpolymerization experiments than in binary polymerizations. 1976H. Sawada Thermodynamics of Polymerization ix. 262 (caption) Heat of terpolymerization for the acrylonitrile⁓methyl methacrylate-styrene system.
1869Eng. Mech. 12 Nov. 198/3 The elements are classified as..triatomic or tervalent, with three attractions, as nitrogen. 1903Athenæum 3 Jan. 22/2 We wish that the translator had avoided the use of such hybrid words as monovalent, divalent, trivalent, tetravalent, and pentavalent when he had to hand the equally expressive and less mongrel words univalent, bivalent, tervalent, quadrivalent and quinquevalent. |