ter-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Origin: A borrowing from Latin. Etymon: Latin ter.

Etymology: < classical Latin ter (adverb) three times < the same Indo-European base as Sanskrit triḥ, ancient Greek τρίς.Compare French ter-.

a. Prefixed to adjectives.

(a) In sense ‘thrice, three times’.

ter-trinal adj.

Brit.

/təːˈtrʌɪnl/

U.S.

/tərˈtraɪn(ə)l/

consisting of three sets of three.

ΚΠ

1876 T. Le M. Douse Grimm's Law §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) Also expressing a high degree.

ter-sacred adj.

Brit.

/təːˈseɪkrᵻd/

U.S.

/tərˈseɪkrᵻd/

thrice sacred. [After post-classical Latin ter sacer (1541 or earlier).]

ΚΠ

1602 W. Watson Decacordon Ten Quodlibeticall Questions Pref. sig. A vj^v The tersacred Apostolicall Romane Church.

1602 W. Watson Decacordon Ten Quodlibeticall Questions 7 Directing his hand to that tender tersacred and euer blessed heart.

b. Prefixed to adjectives and nouns: expressing threefold recurrence or continuance.

ter-diurnal adj.

Brit.

/ˌtəːdʌɪˈəːnl/

U.S.

/ˌtərdaɪˈərn(ə)l/

occurring or done thrice a day.

ΘΚΠ

the world > time > period > a day or twenty-four hours > [adjective] > occurring specific number of times a day

bimeridian1869

semi-daily1869

tridiurnal1884

ter-diurnal1892

di-diurnal-

1892 Ld. Kelvin Presid. Addr. Royal Soc. 30 Nov. The largeness of the solar semi-diurnal, ter-diurnal, and quarter-diurnal constituents found by the harmonic analysis.

ter-millenary n.

Brit.

/təːˈmɪlᵻn(ə)ri/

/ˌtəːmᵻˈlɛnəri/

U.S.

/tərˈmɪləˌnɛri/

a three-thousandth anniversary. [After tercentenary n.]

ΘΚΠ

the world > time > particular time > an anniversary > [noun] > specific anniversaries

jubileec1386

quinquagenary1588

centenary1661

millennium1664

secular1706

coming of age1788

centennial1791

tricentenary1846

tercentenary1855

quinquennial1857

ter-millenary1864

sexcentenary1865

semi-centenary1870

bicentenary1872

septcentenary1873

quincentenary1877

sesquicentennial1880

quadricentennial1882

bicentennial1883

quatercentenary1883

tricentennial1883

tercentennial1884

quincentennial1885

octocentenary1888

quadrennial1890

quingentenary1892

octingentenary1893

ruby anniversary1893

semi-jubilee1893

septingentenary1893

millennial1896

millenary1897

quadringenary1905

quingenary1911

bimillenary1961

sesquicentenary1961

quasquicentennial1962

nongenary1966

octocentennial1994

1864 Realm 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 adj. and n., tergeminate adj., etc.

2. Chemistry.

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- comb. form.

ΚΠ

1836 W. T. Brande Man. Chem. (ed. 4) 773 Terchloride of Chromium. (Chr+O₃C.)

1838 T. Thomson Chem. Org. Bodies 258 It is..a tertannate.

1849 D. Campbell Pract. Text-bk. Inorg. Chem. 111 Besides this iodate of potash, there are other two, namely, a biniodate and a teriodate.

1853 W. Gregory Inorg. Chem. (ed. 3) 240 Antimony... This valuable metal is chiefly found in the mineral called antimony, which is a tersulphuret, SbS₃.

1853 A. Ure Dict. Arts (ed. 4) I. 1058 The explosive compound, the teriodide of nitrogen.

1856 W. A. Miller Elements Chem. II. 914 Terfluoride of chromium forms deep red fumes of chromic acid.

1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxiii. 230 A third salt, termed ter-chromate [1882 trichromate], K₂Cr₃O₁₀, crystallizes out.

1883 J. T. Taylor Hardwich's Man. Photogr. Chem. (ed. 9) 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.

† ter-aˈtomic adj. Obsolete of three atoms, triatomic adj.

ΘΚΠ

the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by number of atoms

monatomic1848

pentatomic1858

ter-atomic1861

tetratomic1862

triatomic1862

diatomic1866

hexatomic1868

octatomic1875

heptatomic1886

monadic1907

1861 Frankland in Q. Jrnl. Chem. Soc. 13 192 Organo-metallic compounds..are uniatomic, biatomic, teratomic, or quadratomic, according to the number of molecules requisite to complete their saturation.

ter-equivalent adj.

Brit.

/ˌtəːrᵻˈkwɪvələnt/

/ˌtəːrᵻˈkwɪvl̩ənt/

/ˌtəːrᵻˈkwɪvl̩n̩t/

U.S.

/ˌtərəˈkwɪv(ə)lənt/

/ˌtəriˈkwɪv(ə)lənt/

= trivalent adj. and n.

ΘΚΠ

the world > matter > chemistry > valency > [adjective] > having a valency of three

triatomic1862

tribasic1862

ter-equivalent1866

trivalent1868

tervalent1869

triadic1882

1866 S. Macadam G. Wilson's Inorg. Chem. §1109 The Triatomic, Trihydric, or Terequivalent (Terivalent) elements.

termolecular adj.

Brit.

/ˌtəːməˈlɛkjᵿlə/

U.S.

/ˌtərməˈlɛkjələr/

involving three molecules.

ΘΚΠ

the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to molecularity > of three

termolecular1901

the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by number

monomolecular1876

bimolecular1899

termolecular1901

supermolecular1908

polymolecular1922

1901 Jrnl. Chem. Soc. 79 i. 229 Even in darkness the action is termolecular.

1931 Maass & Steacie Introd. Princ. Physical Chem. xii. 199 The reaction between nitric oxide and chlorine is an example of a termolecular reaction.

1974 Nature 19 Apr. 666/2 The dimer must be formed by a termolecular collision.

terpolymer n.

Brit.

/təːˈpɒlᵻmə/

U.S.

/tərˈpɑləmər/

a polymer whose molecule is composed of three different monomers.

ΘΚΠ

the world > matter > chemistry > polymer chemistry > polymers > [noun] > types (by monomeric composition) > from two or more kinds

heteropolymer1931

interpolymer1936

co-polymer1940

terpolymer1961

1961 Webster's 3rd New Internat. Dict. Eng. Lang. Terpolymer.

1967 New Scientist 18 May 423/3 Terpolymers (e.g. ABS plastics) are in use already.

1975 Sci. 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.

terpolymerization n.

Brit.

/təːˌpɒlᵻmərʌɪˈzeɪʃn/

U.S.

/ˌtərpəˌlɪmərəˈzeɪʃ(ə)n/

/tərˌpɑləmərəˈzeɪʃ(ə)n/

/tərˌpɑləməˌraɪˈzeɪʃ(ə)n/

polymerization in which three different monomers go to form a terpolymer.

ΘΚΠ

the world > matter > chemistry > polymer chemistry > polymerization > [noun] > types (by monomeric composition) > from two or more kinds > terpolymerization

terpolymerization1964

1964 Jrnl. Polymer Sci. A. 2 2740 Penultimate effects in copolymerization can be determined more precisely from composition studies in terpolymerization experiments than in binary polymerizations.

1976 H. Sawada Thermodynamics of Polymerization ix. 262 (caption) Heat of terpolymerization for the acrylonitrile~methyl methacrylate-styrene system.

Categories »

tervalence n.

Brit.

/ˈtəːvələns/

U.S.

/ˈtərvələns/

= trivalence n. at trivalent adj. and n. Derivatives.

tervalent adj.

Brit.

/ˈtəːvələnt/

U.S.

/ˈtərvələnt/

= trivalent adj. and n.

ΘΚΠ

the world > matter > chemistry > valency > [adjective] > having a valency of three

triatomic1862

tribasic1862

ter-equivalent1866

trivalent1868

tervalent1869

triadic1882

1869 Eng. Mech. 12 Nov. 198/3 The elements are classified as..triatomic or tervalent, with three attractions, as nitrogen.

1903 Athenæum 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.

This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2022).

单词	ter-
释义	ter-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Origin: A borrowing from Latin. Etymon: Latin ter. Etymology: < classical Latin ter (adverb) three times < the same Indo-European base as Sanskrit triḥ, ancient Greek τρίς.Compare French ter-. 1. a. Prefixed to adjectives. (a) In sense ‘thrice, three times’. ter-trinal adj. Brit. /təːˈtrʌɪnl/ , U.S. /tərˈtraɪn(ə)l/ consisting of three sets of three. ΚΠ 1876 T. Le M. Douse Grimm's Law §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) Also expressing a high degree. ter-sacred adj. Brit. /təːˈseɪkrᵻd/ , U.S. /tərˈseɪkrᵻd/ thrice sacred. [After post-classical Latin ter sacer (1541 or earlier).] ΚΠ 1602 W. Watson Decacordon Ten Quodlibeticall Questions Pref. sig. A vj^v The tersacred Apostolicall Romane Church. 1602 W. Watson Decacordon Ten Quodlibeticall Questions 7 Directing his hand to that tender tersacred and euer blessed heart. b. Prefixed to adjectives and nouns: expressing threefold recurrence or continuance. ter-diurnal adj. Brit. /ˌtəːdʌɪˈəːnl/ , U.S. /ˌtərdaɪˈərn(ə)l/ occurring or done thrice a day. ΘΚΠ the world > time > period > a day or twenty-four hours > [adjective] > occurring specific number of times a day bimeridian1869 semi-daily1869 tridiurnal1884 ter-diurnal1892 di-diurnal- 1892 Ld. Kelvin Presid. Addr. Royal Soc. 30 Nov. The largeness of the solar semi-diurnal, ter-diurnal, and quarter-diurnal constituents found by the harmonic analysis. ter-millenary n. Brit. /təːˈmɪlᵻn(ə)ri/ , /ˌtəːmᵻˈlɛnəri/ , U.S. /tərˈmɪləˌnɛri/ a three-thousandth anniversary. [After tercentenary n.] ΘΚΠ the world > time > particular time > an anniversary > [noun] > specific anniversaries jubileec1386 quinquagenary1588 centenary1661 millennium1664 secular1706 coming of age1788 centennial1791 tricentenary1846 tercentenary1855 quinquennial1857 ter-millenary1864 sexcentenary1865 semi-centenary1870 bicentenary1872 septcentenary1873 quincentenary1877 sesquicentennial1880 quadricentennial1882 bicentennial1883 quatercentenary1883 tricentennial1883 tercentennial1884 quincentennial1885 octocentenary1888 quadrennial1890 quingentenary1892 octingentenary1893 ruby anniversary1893 semi-jubilee1893 septingentenary1893 millennial1896 millenary1897 quadringenary1905 quingenary1911 bimillenary1961 sesquicentenary1961 quasquicentennial1962 nongenary1966 octocentennial1994 1864 Realm 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 adj. and n., tergeminate adj., etc. 2. Chemistry. 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- comb. form. ΚΠ 1836 W. T. Brande Man. Chem. (ed. 4) 773 Terchloride of Chromium. (Chr+O₃C.) 1838 T. Thomson Chem. Org. Bodies 258 It is..a tertannate. 1849 D. Campbell Pract. Text-bk. Inorg. Chem. 111 Besides this iodate of potash, there are other two, namely, a biniodate and a teriodate. 1853 W. Gregory Inorg. Chem. (ed. 3) 240 Antimony... This valuable metal is chiefly found in the mineral called antimony, which is a tersulphuret, SbS₃. 1853 A. Ure Dict. Arts (ed. 4) I. 1058 The explosive compound, the teriodide of nitrogen. 1856 W. A. Miller Elements Chem. II. 914 Terfluoride of chromium forms deep red fumes of chromic acid. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxiii. 230 A third salt, termed ter-chromate [1882 trichromate], K₂Cr₃O₁₀, crystallizes out. 1883 J. T. Taylor Hardwich's Man. Photogr. Chem. (ed. 9) 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. † ter-aˈtomic adj. Obsolete of three atoms, triatomic adj. ΘΚΠ the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by number of atoms monatomic1848 pentatomic1858 ter-atomic1861 tetratomic1862 triatomic1862 diatomic1866 hexatomic1868 octatomic1875 heptatomic1886 monadic1907 1861 Frankland in Q. Jrnl. Chem. Soc. 13 192 Organo-metallic compounds..are uniatomic, biatomic, teratomic, or quadratomic, according to the number of molecules requisite to complete their saturation. ter-equivalent adj. Brit. /ˌtəːrᵻˈkwɪvələnt/ , /ˌtəːrᵻˈkwɪvl̩ənt/ , /ˌtəːrᵻˈkwɪvl̩n̩t/ , U.S. /ˌtərəˈkwɪv(ə)lənt/ , /ˌtəriˈkwɪv(ə)lənt/ = trivalent adj. and n. ΘΚΠ the world > matter > chemistry > valency > [adjective] > having a valency of three triatomic1862 tribasic1862 ter-equivalent1866 trivalent1868 tervalent1869 triadic1882 1866 S. Macadam G. Wilson's Inorg. Chem. §1109 The Triatomic, Trihydric, or Terequivalent (Terivalent) elements. termolecular adj. Brit. /ˌtəːməˈlɛkjᵿlə/ , U.S. /ˌtərməˈlɛkjələr/ involving three molecules. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to molecularity > of three termolecular1901 the world > matter > chemistry > atomic chemistry > [adjective] > relating to molecules > by number monomolecular1876 bimolecular1899 termolecular1901 supermolecular1908 polymolecular1922 1901 Jrnl. Chem. Soc. 79 i. 229 Even in darkness the action is termolecular. 1931 Maass & Steacie Introd. Princ. Physical Chem. xii. 199 The reaction between nitric oxide and chlorine is an example of a termolecular reaction. 1974 Nature 19 Apr. 666/2 The dimer must be formed by a termolecular collision. terpolymer n. Brit. /təːˈpɒlᵻmə/ , U.S. /tərˈpɑləmər/ a polymer whose molecule is composed of three different monomers. ΘΚΠ the world > matter > chemistry > polymer chemistry > polymers > [noun] > types (by monomeric composition) > from two or more kinds heteropolymer1931 interpolymer1936 co-polymer1940 terpolymer1961 1961 Webster's 3rd New Internat. Dict. Eng. Lang. Terpolymer. 1967 New Scientist 18 May 423/3 Terpolymers (e.g. ABS plastics) are in use already. 1975 Sci. 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. terpolymerization n. Brit. /təːˌpɒlᵻmərʌɪˈzeɪʃn/ , U.S. /ˌtərpəˌlɪmərəˈzeɪʃ(ə)n/ , /tərˌpɑləmərəˈzeɪʃ(ə)n/ , /tərˌpɑləməˌraɪˈzeɪʃ(ə)n/ polymerization in which three different monomers go to form a terpolymer. ΘΚΠ the world > matter > chemistry > polymer chemistry > polymerization > [noun] > types (by monomeric composition) > from two or more kinds > terpolymerization terpolymerization1964 1964 Jrnl. Polymer Sci. A. 2 2740 Penultimate effects in copolymerization can be determined more precisely from composition studies in terpolymerization experiments than in binary polymerizations. 1976 H. Sawada Thermodynamics of Polymerization ix. 262 (caption) Heat of terpolymerization for the acrylonitrile~methyl methacrylate-styrene system. Categories » tervalence n. Brit. /ˈtəːvələns/ , U.S. /ˈtərvələns/ = trivalence n. at trivalent adj. and n. Derivatives. tervalent adj. Brit. /ˈtəːvələnt/ , U.S. /ˈtərvələnt/ = trivalent adj. and n. ΘΚΠ the world > matter > chemistry > valency > [adjective] > having a valency of three triatomic1862 tribasic1862 ter-equivalent1866 trivalent1868 tervalent1869 triadic1882 1869 Eng. Mech. 12 Nov. 198/3 The elements are classified as..triatomic or tervalent, with three attractions, as nitrogen. 1903 Athenæum 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. This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2022). < comb. form1602
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