trivalentadj.n.

Brit.

/trʌɪˈveɪlənt/,

/ˈtrʌɪvələnt/,

/ˈtrɪvələnt/, U.S.

/traɪˈveɪlənt/

Etymology: < tri- comb. form + Latin valēnt-em, present participle of valēre to be worth.

A. adj.

1. Chemistry. Having the combining power of three atoms of hydrogen or other univalent element; combining with three atoms of a univalent element or radical.

ΘΚΠ

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

triatomic1862

tribasic1862

ter-equivalent1866

trivalent1868

tervalent1869

triadic1882

1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 251 Trivalent elements or Triads.

1876 W. A. Tilden Introd. Study Chem. Philos. 143 The group PO₄ is trivalent, and so it holds together the two atoms of sodium and one atom of hydrogen in one molecule.

1880 E. Cleminshaw tr. C. A. Wurtz Atomic Theory 260 The ammonia type [represented] the combination of a trivalent atom with three univalent atoms.

1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 524 The atom of B [Boron] is trivalent in gaseous molecules.

2. Cytology. That is (part of) a trivalent.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > chromosomes in respect of meiosis

non-homologous1883

quadrivalent1898

univalent1898

bivalent1899

plurivalent1901

homologous1903

heterotropic1905

monovalent1906

heteromorphic1917

homomorphic1917

trivalent1921

multivalent1929

sexivalent1931

nullisomic1932

quinquevalent1935

1921 Proc. National Acad. Sci. U.S.A. 7 200 In the 8 remaining prophase or metaphase figures, not all the trivalent chromosomes could be distinguished from the bivalents or univalents into which they had divided, or from which they were composed.

1929 Jrnl. Genetics 21 18 The hyacinths offered an opportunity for the comparative study in the same cell of the structure and behaviour of bivalent, trivalent and quadrivalent chromosomes of distinct types.

1976 Genetical Res. XXVIII. 55 We present data pertaining to..chromosome XVII trisomics of S[accharomyces] cerevisiae which demonstrate that trivalent meiotic association occurs with a high frequency.

3. Immunology. Of a vaccine: giving immunity to three forms of a disease.

ΘΚΠ

the world > health and disease > healing > medicines or physic > medicines for specific purpose > vaccine or antiserum > [adjective] > monovalent or trivalent

monovalent1930

trivalent1959

1959 New Scientist 19 Feb. 395 (caption) Transfer of single strain vaccine pools to tanks to form final trivalent vaccine.

1961 Guardian 25 Oct. 3/5 A ‘trivalent’ form of vaccine will be used. This contains polio virus of all three types.

B. n.

Cytology. With pronunciation

/ˈtrɪvələnt/. A multivalent consisting of three chromosomes.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > chromosomes in respect of meiosis

trivalency1888

zygosome1905

bivalence1909

zygonema1911

trivalent1922

quadrivalent1923

quinquevalent1926

multivalent1929

nullisomic1932

bivalent1937

nullisome1944

1922 Amer. Naturalist 56 341 There are 12 sets of three united chromosomes each, and these trivalents can be arranged according to the size formula.

1936 Hereditas XXI. 305 In triploid hybrids..there was a high frequency of trivalents.

1975 Nature 17 Apr. 595/2 A sister plant which was a monosomic (2n = 41)..formed some trivalents, quadrivalents,..pentavalents and hexavalents, in addition to bivalents.

Derivatives

trivalence n.

/ˈtraɪvələns//ˈtrɪv-/ the quality of being trivalent.

ΘΚΠ

the world > matter > chemistry > valency > [noun] > valency of three > quality of being trivalent

trivalence1888

1888 Athenæum 21 July 102/2 The trivalence of the metals of the aluminium group.

triˈvalency n.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > chromosomes in respect of meiosis

trivalency1888

zygosome1905

bivalence1909

zygonema1911

trivalent1922

quadrivalent1923

quinquevalent1926

multivalent1929

nullisomic1932

bivalent1937

nullisome1944

1888 Jrnl. Chem. Soc. 54 1071 The formula for benzene [was]..afterwards given up owing to the difficulty of explaining the trivalency of carbon which it involved.

1927 N. V. Sidgwick Electronic Theory of Valency xv. 271 Trivalency [of carbon]..only arises under extreme compulsion, and is excessively unstable.

This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).

单词	trivalent
释义	trivalentadj.n. Brit. /trʌɪˈveɪlənt/, /ˈtrʌɪvələnt/, /ˈtrɪvələnt/, U.S. /traɪˈveɪlənt/ Etymology: < tri- comb. form + Latin valēnt-em, present participle of valēre to be worth. A. adj. 1. Chemistry. Having the combining power of three atoms of hydrogen or other univalent element; combining with three atoms of a univalent element or radical. ΘΚΠ the world > matter > chemistry > valency > [adjective] > having a valency of three triatomic1862 tribasic1862 ter-equivalent1866 trivalent1868 tervalent1869 triadic1882 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 251 Trivalent elements or Triads. 1876 W. A. Tilden Introd. Study Chem. Philos. 143 The group PO₄ is trivalent, and so it holds together the two atoms of sodium and one atom of hydrogen in one molecule. 1880 E. Cleminshaw tr. C. A. Wurtz Atomic Theory 260 The ammonia type [represented] the combination of a trivalent atom with three univalent atoms. 1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 524 The atom of B [Boron] is trivalent in gaseous molecules. 2. Cytology. That is (part of) a trivalent. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > chromosomes in respect of meiosis non-homologous1883 quadrivalent1898 univalent1898 bivalent1899 plurivalent1901 homologous1903 heterotropic1905 monovalent1906 heteromorphic1917 homomorphic1917 trivalent1921 multivalent1929 sexivalent1931 nullisomic1932 quinquevalent1935 1921 Proc. National Acad. Sci. U.S.A. 7 200 In the 8 remaining prophase or metaphase figures, not all the trivalent chromosomes could be distinguished from the bivalents or univalents into which they had divided, or from which they were composed. 1929 Jrnl. Genetics 21 18 The hyacinths offered an opportunity for the comparative study in the same cell of the structure and behaviour of bivalent, trivalent and quadrivalent chromosomes of distinct types. 1976 Genetical Res. XXVIII. 55 We present data pertaining to..chromosome XVII trisomics of S[accharomyces] cerevisiae which demonstrate that trivalent meiotic association occurs with a high frequency. 3. Immunology. Of a vaccine: giving immunity to three forms of a disease. ΘΚΠ the world > health and disease > healing > medicines or physic > medicines for specific purpose > vaccine or antiserum > [adjective] > monovalent or trivalent monovalent1930 trivalent1959 1959 New Scientist 19 Feb. 395 (caption) Transfer of single strain vaccine pools to tanks to form final trivalent vaccine. 1961 Guardian 25 Oct. 3/5 A ‘trivalent’ form of vaccine will be used. This contains polio virus of all three types. B. n. Cytology. With pronunciation /ˈtrɪvələnt/. A multivalent consisting of three chromosomes. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > chromosomes in respect of meiosis trivalency1888 zygosome1905 bivalence1909 zygonema1911 trivalent1922 quadrivalent1923 quinquevalent1926 multivalent1929 nullisomic1932 bivalent1937 nullisome1944 1922 Amer. Naturalist 56 341 There are 12 sets of three united chromosomes each, and these trivalents can be arranged according to the size formula. 1936 Hereditas XXI. 305 In triploid hybrids..there was a high frequency of trivalents. 1975 Nature 17 Apr. 595/2 A sister plant which was a monosomic (2n = 41)..formed some trivalents, quadrivalents,..pentavalents and hexavalents, in addition to bivalents. Derivatives trivalence n. /ˈtraɪvələns//ˈtrɪv-/ the quality of being trivalent. ΘΚΠ the world > matter > chemistry > valency > [noun] > valency of three > quality of being trivalent trivalence1888 1888 Athenæum 21 July 102/2 The trivalence of the metals of the aluminium group. triˈvalency n. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > chromosomes in respect of meiosis trivalency1888 zygosome1905 bivalence1909 zygonema1911 trivalent1922 quadrivalent1923 quinquevalent1926 multivalent1929 nullisomic1932 bivalent1937 nullisome1944 1888 Jrnl. Chem. Soc. 54 1071 The formula for benzene [was]..afterwards given up owing to the difficulty of explaining the trivalency of carbon which it involved. 1927 N. V. Sidgwick Electronic Theory of Valency xv. 271 Trivalency [of carbon]..only arises under extreme compulsion, and is excessively unstable. This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022). < adj.n.1868
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