dyadicadj.n.

Brit.

/dʌɪˈadɪk/, U.S.

/daɪˈædɪk/

Etymology: < Greek δυαδικός of the number two.

A. adj.

a. Of or pertaining to a dyad or group of two. dyadic arithmetic: binary arithmetic, in which the radix is 2. dyadic disyntheme: see duadic adj. at duad n. Derivatives.

ΘΚΠ

the world > relative properties > number > specific numbers > two > pair > [adjective]

double1393

coupledc1440

conjugate1471

duplicate?a1475

jumellec1475

gemel1497

geminate1589

paired1595

fellowed1654

duplicatory1659

gemellous1697

dyadic1728

duplex1817

Siamese twins1829

parial1849

dyad1869

duadic1879

pairwise1913

duplicitous1985

1728 E. Chambers Cycl. at Arithmetic Binary, or Dyadic Arithmetic, is that wherein only two Figures, Unity, or 1, and 0, are used.

1800 Monthly Mag. 10 43 The dyadic arithmetic proposes to express all numbers by two characters, 1 and 0... Thus, 1 is represented by 1, 2 by 10, 4 by 100, and 8 by 1000.

1884 P. Schaff et al. Relig. Encycl. III. 2395 Up to 360, the whole development [of the doctrine of the Trinity] was markedly dyadic.

b. Chemistry. Of the atomic constitution of a dyad.

ΘΚΠ

the world > matter > chemistry > valency > [adjective] > of or relating to combining powers of elements > having a power of two

dyadic1868

1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 399 Cadmium, like zinc, is dyadic.

B. n.

1. = dyadic arithmetic at sense A. a.

ΚΠ

1845 J. M. Mackie Life Leibnitz 187 Leibnitz invented the Dyadik or reckoning with zero and unity.]

a. Mathematics. Any quantity formed by the addition or subtraction (or both) of dyads.

ΚΠ

1884 J. W. Gibbs Coll. Wks. (1928) II. ii. iii. 53 An expression consisting of any number of dyads united by the signs + or − will be called a dyadic binomial, trinomial etc.,..or, more briefly, a dyadic. The latter term will be used so as to include the case of a single dyad.

1924 C. E. Weatherburn Adv. Vector Anal. v. 81 Then r′ = r·ai + r·bj + r·ck. We write this more briefly r′ = r·(ai + bj + ck), where the expression in brackets is an operator called a dyadic.

1969 Ll. G. Chambers Course Vector Anal. vi. 189 Dyadics may be formed in which the vector operator ∇ is a component part.

b. ‘The science of reckoning with a system of numerals in which the ratio of values of successive places is two’ (Cent. Dict. 1889).

Draft additions 1993

Forms: Also (rare) diadic.

Frequency (in current use):

Logic. Pertaining to or designating a relation between exactly two entities, or a predicate expressing such a relation. Also transferred, esp. in Mathematics and Computing: designating any expression, operator, etc. which requires or acts on two arguments.

ΘΚΠ

the mind > mental capacity > philosophy > logic > logical proposition > [adjective] > of types of propositions

causalc1530

subalternate1599

equipollent1642

reduplicative1671

subalternating1671

pure1697

poristic1704

desitive1725

inceptive1725

contrary1739

exponible1788

analytic1797

analytical1797

poristical1828

oristica1832

oristicosemeiotica1832

balanced1849

plurative1849

molecular1892

dyadic1897

monadic1897

dispositional1909

non-atomic1934

the mind > mental capacity > philosophy > logic > predicate or propositional logic > [adjective] > terms expressing types of relation

transitive1856

intransitive1870

irreflexive1890

dyadic1897

symmetrical1903

non-reflexive1905

polyadic1905

symmetric1933

mereological1957

the mind > language > linguistics > study of grammar > other grammatical categories or concepts > [adjective] > relation between exactly two entities

dyadic1897

society > computing and information technology > programming language > [adjective] > describing operators

dyadic1962

the world > relative properties > number > mathematical number or quantity > [adjective] > describing relationships between quantities > other

incommensurable1557

minor1571

reflexive1903

biunique1941

dyadic1962

the world > relative properties > number > mathematical notation or symbol > [adjective] > acting on or requiring two arguments

dyadic1982

1897 C. S. Peirce in Monist 7 167 An ordinary relative with an active verb as ‘—is a lover of—’ or ‘the loving by—of—’ has two blanks; it is a dyad, or dyadic relative.

1906 C. S. Peirce in Monist 16 512 A Predicate is either non-relative, or a monad..as is ‘black’; or it is a dyadic relative, or dyad, such as ‘kills’, or it is a polyadic relative, such as ‘gives’.

1921 W. E. Johnson Logic I. 203 The number of substantival references are respectively one, two, three and four, and the corresponding adjectives or propositions may be called monadic, diadic, triadic and tetradic.

1955 A. N. Prior Formal Logic iv. 85 We may..construct monadic and dyadic predicates out of triadic ones.

1962 Gloss. Terms Automatic Data Processing (B.S.I.) 28 Dyadic operation, an operation on two operands.

1982 IEEE Trans. Antennas & Propagation 30 1003/2 We found dyadic Green functions convenient in deriving variationally invariant expressions for the scattering amplitude.

This entry has not yet been fully updated (first published 1897; most recently modified version published online March 2022).

单词	dyadic
释义	dyadicadj.n. Brit. /dʌɪˈadɪk/, U.S. /daɪˈædɪk/ Etymology: < Greek δυαδικός of the number two. A. adj. a. Of or pertaining to a dyad or group of two. dyadic arithmetic: binary arithmetic, in which the radix is 2. dyadic disyntheme: see duadic adj. at duad n. Derivatives. ΘΚΠ the world > relative properties > number > specific numbers > two > pair > [adjective] double1393 coupledc1440 conjugate1471 duplicate?a1475 jumellec1475 gemel1497 geminate1589 paired1595 fellowed1654 duplicatory1659 gemellous1697 dyadic1728 duplex1817 Siamese twins1829 parial1849 dyad1869 duadic1879 pairwise1913 duplicitous1985 1728 E. Chambers Cycl. at Arithmetic Binary, or Dyadic Arithmetic, is that wherein only two Figures, Unity, or 1, and 0, are used. 1800 Monthly Mag. 10 43 The dyadic arithmetic proposes to express all numbers by two characters, 1 and 0... Thus, 1 is represented by 1, 2 by 10, 4 by 100, and 8 by 1000. 1884 P. Schaff et al. Relig. Encycl. III. 2395 Up to 360, the whole development [of the doctrine of the Trinity] was markedly dyadic. b. Chemistry. Of the atomic constitution of a dyad. ΘΚΠ the world > matter > chemistry > valency > [adjective] > of or relating to combining powers of elements > having a power of two dyadic1868 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 399 Cadmium, like zinc, is dyadic. B. n. 1. = dyadic arithmetic at sense A. a. ΚΠ 1845 J. M. Mackie Life Leibnitz 187 Leibnitz invented the Dyadik or reckoning with zero and unity.] 2. a. Mathematics. Any quantity formed by the addition or subtraction (or both) of dyads. ΚΠ 1884 J. W. Gibbs Coll. Wks. (1928) II. ii. iii. 53 An expression consisting of any number of dyads united by the signs + or − will be called a dyadic binomial, trinomial etc.,..or, more briefly, a dyadic. The latter term will be used so as to include the case of a single dyad. 1924 C. E. Weatherburn Adv. Vector Anal. v. 81 Then r′ = r·ai + r·bj + r·ck. We write this more briefly r′ = r·(ai + bj + ck), where the expression in brackets is an operator called a dyadic. 1969 Ll. G. Chambers Course Vector Anal. vi. 189 Dyadics may be formed in which the vector operator ∇ is a component part. b. ‘The science of reckoning with a system of numerals in which the ratio of values of successive places is two’ (Cent. Dict. 1889). Draft additions 1993 Forms: Also (rare) diadic. Frequency (in current use): Show frequency band information Logic. Pertaining to or designating a relation between exactly two entities, or a predicate expressing such a relation. Also transferred, esp. in Mathematics and Computing: designating any expression, operator, etc. which requires or acts on two arguments. ΘΚΠ the mind > mental capacity > philosophy > logic > logical proposition > [adjective] > of types of propositions causalc1530 subalternate1599 equipollent1642 reduplicative1671 subalternating1671 pure1697 poristic1704 desitive1725 inceptive1725 contrary1739 exponible1788 analytic1797 analytical1797 poristical1828 oristica1832 oristicosemeiotica1832 balanced1849 plurative1849 molecular1892 dyadic1897 monadic1897 dispositional1909 non-atomic1934 the mind > mental capacity > philosophy > logic > predicate or propositional logic > [adjective] > terms expressing types of relation transitive1856 intransitive1870 irreflexive1890 dyadic1897 symmetrical1903 non-reflexive1905 polyadic1905 symmetric1933 mereological1957 the mind > language > linguistics > study of grammar > other grammatical categories or concepts > [adjective] > relation between exactly two entities dyadic1897 society > computing and information technology > programming language > [adjective] > describing operators dyadic1962 the world > relative properties > number > mathematical number or quantity > [adjective] > describing relationships between quantities > other incommensurable1557 minor1571 reflexive1903 biunique1941 dyadic1962 the world > relative properties > number > mathematical notation or symbol > [adjective] > acting on or requiring two arguments dyadic1982 1897 C. S. Peirce in Monist 7 167 An ordinary relative with an active verb as ‘—is a lover of—’ or ‘the loving by—of—’ has two blanks; it is a dyad, or dyadic relative. 1906 C. S. Peirce in Monist 16 512 A Predicate is either non-relative, or a monad..as is ‘black’; or it is a dyadic relative, or dyad, such as ‘kills’, or it is a polyadic relative, such as ‘gives’. 1921 W. E. Johnson Logic I. 203 The number of substantival references are respectively one, two, three and four, and the corresponding adjectives or propositions may be called monadic, diadic, triadic and tetradic. 1955 A. N. Prior Formal Logic iv. 85 We may..construct monadic and dyadic predicates out of triadic ones. 1962 Gloss. Terms Automatic Data Processing (B.S.I.) 28 Dyadic operation, an operation on two operands. 1982 IEEE Trans. Antennas & Propagation 30 1003/2 We found dyadic Green functions convenient in deriving variationally invariant expressions for the scattering amplitude. This entry has not yet been fully updated (first published 1897; most recently modified version published online March 2022). < adj.n.1728
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