irreducibleadj.

/ɪrɪˈdjuːsɪb(ə)l/

Etymology: ir- prefix²: compare French irréductible.

That cannot be reduced.

a. That cannot be brought to a desired form, state, condition, etc. Const. †into, to.

ΘΚΠ

the world > time > change > absence of change, changelessness > [adjective]

fasteOE

inunvariable1535

uniform1559

changeless1575

unvariant1582

wasteless1589

unchanging1595

inherent1601

unselfchanging1605

shiftless1606

ne'er-changinga1616

waxlessa1618

immutable1621

equal1626

irreducible1633

indiminishable1641

imprevaricable1644

Median1649

undiminishable1653

assiduous1661

unvarying1690

unfluctuating1723

unrelapsing1740

stable1742

unarbitrary1793

untransferable1794

unaltering1813

constant1817

all-or-nothing1853

all-or-none1864

reducelessc1864

unaugmentable1868

invariant1874

inadaptive1886

plateaued1899

steady state1909

hardcore1951

homoeostatic1955

monochromatic1959

the world > time > change > absence of change, changelessness > [adjective] > unchangeable

unchangeablea1340

immovablec1374

unmovablec1384

immutable1412

unvariablec1425

indeclinable1432

unmutable?a1439

incommutablec1450

irrevocable1490

impermutable1528

irrecoverable1540

inalterable?1541

unreformable1549

inchangeable1583

beyond (also past, without) recall1597

incontrollable1605

invariable1607

unalterable1611

unrecallable1611

untransmutable1611

unreversable1616

involublea1618

irreversible1629

irreducible1633

inconvertible1646

eternal1685

intransmutable1691

unconvertible1700

unvoidable1725

unmodifiable1798

irreformable1812

irrevertible1822

irredeemable1839

true1845

influxible1871

irrevisable1884

intransformable1887

1633 W. Prynne Histrio-mastix i. ii. 41 They are irreducible, vnconuertible to any lawfull, good, or Christian purposes.

1669 W. Simpson Hydrologia Chymica 166 Irreducible to their pristine metalline form.

1818 H. Hallam View Europe Middle Ages II. ix. 495 The fashions of dress and of amusements are generally capricious and irreducible to rule.

1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) I. 355 When chemical affinity was regarded as a quality sui generis, and irreducible to numerical measurement.

b. spec. That cannot be reduced to a simpler or more intelligible form; incapable of being resolved into elements, or of being brought under any recognized law or principle.

ΘΚΠ

the world > relative properties > wholeness > state or quality of being simple, unmixed, or uncompounded > [adjective] > incapable of being reduced

unreduceablea1646

unreducible1768

irreducible1835

the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [adjective] > quintessential > irreducible

irreductible1753

irreducible1835

1835 E. A. Poe Hans Pfaall in Wks. (1864) I. 8 A constituent of azote, so long considered irreducible.

1841–8 F. Myers Catholic Thoughts II. iv. §15. 259 The great primary Fact..irreducible and unintelligible by any faculty of ours.

1868 W. Lockyer & J. N. Lockyer tr. A. Guillemin Heavens (ed. 3) 396 Each new triumph of optical skill results in a resolution of some nebulæ, before irreducible.

1871 R. H. Hutton Ess. (1877) I. 42 To admit the..irreducible nature of mental phenomena—to admit that they cannot anyhow be analysed into physical.

c. Algebra. (See quots.)

ΚΠ

1753 Chambers's Cycl. Suppl. Irreducible case,..that case of cubic equations where the root, according to Cardan's rule, appears under an impossible or imaginary form, and yet is real.

1778 Maseres in Philos. Trans. (Royal Soc.) 68 920 The remaining case of the cubick equation..which..cannot be resolved by the rules above mentioned, has..obtained amongst algebraists the name of the irreducible case: at least it is often called by the French writers of algebra le cas irréductible.

1839 H. Hallam Introd. Lit. Europe II. viii. 451 Bombelli saw better than Cardan the nature of what is called the irreducible case in cubic equations.

2. Pathology. That cannot be reduced by treatment to a desired form or condition.

ΘΚΠ

the world > health and disease > ill health > a disease > characteristics > [adjective] > resistant to treatment

contumace?1541

contumaced?1541

rebel?1541

wayward?1541

rebellious1565

pertinacious1578

contumacious1605

surly1609

refractory1634

sturdy1643

irreducible1836

1836–9 Todd's Cycl. Anat. & Physiol. II. 740/1 Old ruptures that have become irreducible.

1859 Todd's Cycl. Anat. & Physiol. V. 684/1 An irreducible tumour in the right groin.

3. Incapable of being reduced to a smaller number or amount; the fewest or smallest possible.

ΘΚΠ

the world > relative properties > quantity > smallness of quantity, amount, or degree > [adjective] > smallest or slightest > least possible

minimal1666

irreducible1860

minimalistic1947

minimalist1985

the world > relative properties > quantity > decrease or reduction in quantity, amount, or degree > [adjective] > able to be decreased > not

unallayable1838

irreducible1860

1860 F. W. Farrar Ess. Origin Lang. x. 205 The three families of language are irreducible, i.e. incapable of being derived from one another.

188. American XIV. 134 What is it that we must hold fast as the irreducible minimum of churchmanship?

4. That cannot be reduced to submission; invincible, insuperable.

ΘΚΠ

the world > action or operation > prosperity > success > mastery or superiority > [adjective] > not overcome or overwhelmed > that cannot be

insuperablec1340

unvanquishablea1382

unexpugnable1382

invincible1482

unsuperable1526

inexpugnablea1535

unvincible1554

impugnable1570

conquerless1595

invictivea1607

inaccessible?1611

unsubduable1611

insuppressivea1616

inexsuperable1623

undefeatablea1640

unconquerable1642

irreducible1858

tower-proof1858

insubduable1866

uncrushable1873

unwinnable1972

1858 National Rev. Oct. 500 Allowing the irreducible, uncontrollable nature of the prophetic impulse.

1859 D. Masson Brit. Novelists 100 At last, foiled by her irreducible virtue, he is compelled to call in the clergyman.

1885 L. Wingfield Barbara Philpot II. vi. 193 So 'twas irreducible dislike of his person that had caused the uproar.

Derivatives

irreˈducibleness n.

ΘΚΠ

the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [noun] > quintessence > irreducibility

irreducibility1799

irreducibleness1828

irreductibility1865

1828 N. Webster Amer. Dict. Eng. Lang. Irreducibleness.

1841–4 R. W. Emerson Exper. in Wks. (1906) I. 183 The ancients, struck with this irreducibleness of the elements of human life to calculation, exalted Chance into a divinity.

irreˈducibly adv.

ΘΚΠ

the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [adverb] > quintessentially > irreducibly

irreducibly1847

1847 J. Craig New Universal Dict. Irreducibly.

1923 C. D. Broad Sci. Thought x. 368 The temporal relations..are really irreducibly triadic.

This entry has not yet been fully updated (first published 1900; most recently modified version published online June 2022).

单词	irreducible
释义	irreducibleadj. /ɪrɪˈdjuːsɪb(ə)l/ Etymology: ir- prefix²: compare French irréductible. That cannot be reduced. 1. a. That cannot be brought to a desired form, state, condition, etc. Const. †into, to. ΘΚΠ the world > time > change > absence of change, changelessness > [adjective] fasteOE inunvariable1535 uniform1559 changeless1575 unvariant1582 wasteless1589 unchanging1595 inherent1601 unselfchanging1605 shiftless1606 ne'er-changinga1616 waxlessa1618 immutable1621 equal1626 irreducible1633 indiminishable1641 imprevaricable1644 Median1649 undiminishable1653 assiduous1661 unvarying1690 unfluctuating1723 unrelapsing1740 stable1742 unarbitrary1793 untransferable1794 unaltering1813 constant1817 all-or-nothing1853 all-or-none1864 reducelessc1864 unaugmentable1868 invariant1874 inadaptive1886 plateaued1899 steady state1909 hardcore1951 homoeostatic1955 monochromatic1959 the world > time > change > absence of change, changelessness > [adjective] > unchangeable unchangeablea1340 immovablec1374 unmovablec1384 immutable1412 unvariablec1425 indeclinable1432 unmutable?a1439 incommutablec1450 irrevocable1490 impermutable1528 irrecoverable1540 inalterable?1541 unreformable1549 inchangeable1583 beyond (also past, without) recall1597 incontrollable1605 invariable1607 unalterable1611 unrecallable1611 untransmutable1611 unreversable1616 involublea1618 irreversible1629 irreducible1633 inconvertible1646 eternal1685 intransmutable1691 unconvertible1700 unvoidable1725 unmodifiable1798 irreformable1812 irrevertible1822 irredeemable1839 true1845 influxible1871 irrevisable1884 intransformable1887 1633 W. Prynne Histrio-mastix i. ii. 41 They are irreducible, vnconuertible to any lawfull, good, or Christian purposes. 1669 W. Simpson Hydrologia Chymica 166 Irreducible to their pristine metalline form. 1818 H. Hallam View Europe Middle Ages II. ix. 495 The fashions of dress and of amusements are generally capricious and irreducible to rule. 1881 J. C. Maxwell Treat. Electr. & Magnetism (ed. 2) I. 355 When chemical affinity was regarded as a quality sui generis, and irreducible to numerical measurement. b. spec. That cannot be reduced to a simpler or more intelligible form; incapable of being resolved into elements, or of being brought under any recognized law or principle. ΘΚΠ the world > relative properties > wholeness > state or quality of being simple, unmixed, or uncompounded > [adjective] > incapable of being reduced unreduceablea1646 unreducible1768 irreducible1835 the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [adjective] > quintessential > irreducible irreductible1753 irreducible1835 1835 E. A. Poe Hans Pfaall in Wks. (1864) I. 8 A constituent of azote, so long considered irreducible. 1841–8 F. Myers Catholic Thoughts II. iv. §15. 259 The great primary Fact..irreducible and unintelligible by any faculty of ours. 1868 W. Lockyer & J. N. Lockyer tr. A. Guillemin Heavens (ed. 3) 396 Each new triumph of optical skill results in a resolution of some nebulæ, before irreducible. 1871 R. H. Hutton Ess. (1877) I. 42 To admit the..irreducible nature of mental phenomena—to admit that they cannot anyhow be analysed into physical. c. Algebra. (See quots.) ΚΠ 1753 Chambers's Cycl. Suppl. Irreducible case,..that case of cubic equations where the root, according to Cardan's rule, appears under an impossible or imaginary form, and yet is real. 1778 Maseres in Philos. Trans. (Royal Soc.) 68 920 The remaining case of the cubick equation..which..cannot be resolved by the rules above mentioned, has..obtained amongst algebraists the name of the irreducible case: at least it is often called by the French writers of algebra le cas irréductible. 1839 H. Hallam Introd. Lit. Europe II. viii. 451 Bombelli saw better than Cardan the nature of what is called the irreducible case in cubic equations. 2. Pathology. That cannot be reduced by treatment to a desired form or condition. ΘΚΠ the world > health and disease > ill health > a disease > characteristics > [adjective] > resistant to treatment contumace?1541 contumaced?1541 rebel?1541 wayward?1541 rebellious1565 pertinacious1578 contumacious1605 surly1609 refractory1634 sturdy1643 irreducible1836 1836–9 Todd's Cycl. Anat. & Physiol. II. 740/1 Old ruptures that have become irreducible. 1859 Todd's Cycl. Anat. & Physiol. V. 684/1 An irreducible tumour in the right groin. 3. Incapable of being reduced to a smaller number or amount; the fewest or smallest possible. ΘΚΠ the world > relative properties > quantity > smallness of quantity, amount, or degree > [adjective] > smallest or slightest > least possible minimal1666 irreducible1860 minimalistic1947 minimalist1985 the world > relative properties > quantity > decrease or reduction in quantity, amount, or degree > [adjective] > able to be decreased > not unallayable1838 irreducible1860 1860 F. W. Farrar Ess. Origin Lang. x. 205 The three families of language are irreducible, i.e. incapable of being derived from one another. 188. American XIV. 134 What is it that we must hold fast as the irreducible minimum of churchmanship? 4. That cannot be reduced to submission; invincible, insuperable. ΘΚΠ the world > action or operation > prosperity > success > mastery or superiority > [adjective] > not overcome or overwhelmed > that cannot be insuperablec1340 unvanquishablea1382 unexpugnable1382 invincible1482 unsuperable1526 inexpugnablea1535 unvincible1554 impugnable1570 conquerless1595 invictivea1607 inaccessible?1611 unsubduable1611 insuppressivea1616 inexsuperable1623 undefeatablea1640 unconquerable1642 irreducible1858 tower-proof1858 insubduable1866 uncrushable1873 unwinnable1972 1858 National Rev. Oct. 500 Allowing the irreducible, uncontrollable nature of the prophetic impulse. 1859 D. Masson Brit. Novelists 100 At last, foiled by her irreducible virtue, he is compelled to call in the clergyman. 1885 L. Wingfield Barbara Philpot II. vi. 193 So 'twas irreducible dislike of his person that had caused the uproar. Derivatives irreˈducibleness n. ΘΚΠ the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [noun] > quintessence > irreducibility irreducibility1799 irreducibleness1828 irreductibility1865 1828 N. Webster Amer. Dict. Eng. Lang. Irreducibleness. 1841–4 R. W. Emerson Exper. in Wks. (1906) I. 183 The ancients, struck with this irreducibleness of the elements of human life to calculation, exalted Chance into a divinity. irreˈducibly adv. ΘΚΠ the world > existence and causation > existence > intrinsicality or inherence > essence or intrinsic nature > [adverb] > quintessentially > irreducibly irreducibly1847 1847 J. Craig New Universal Dict. Irreducibly. 1923 C. D. Broad Sci. Thought x. 368 The temporal relations..are really irreducibly triadic. This entry has not yet been fully updated (first published 1900; most recently modified version published online June 2022). < adj.1633
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