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单词 redundant
释义

redundantadj.n.

Brit. /rᵻˈdʌnd(ə)nt/, U.S. /rəˈdənd(ə)nt/, /riˈdənd(ə)nt/
Origin: A borrowing from Latin. Etymons: Latin redundant-, redundans; Latin redundant-, redundāns, redundāre.
Etymology: < post-classical Latin redundant-, redundans (adjective) superfluous (late 2nd or early 3rd cent. in Tertullian), and its etymon classical Latin redundant-, redundāns overflowing, abounding, present participle of redundāre redound v. Compare Middle French, French redondant (13th cent. in Old French in an isolated attestation in sense ‘which overabounds’; subsequently from the 16th cent. in sense ‘excessive, superfluous’). Compare also Spanish redundante (16th cent.), Portuguese redundante (1664), Italian ridondante (a1503 as redondante ). Compare redundance n., redundancy n.
A. adj.
I. Superfluous and related senses.
1. Superfluous, excessive; surplus; unnecessary.
ΘΚΠ
the world > relative properties > quantity > sufficient quantity, amount, or degree > excessive amount or degree > [adjective] > excessive or superfluous
superfluent?1440
superfluous?a1450
superstitiousc1450
superfluec1475
redundant?1577
pleonastical1653
exuberant1667
pleonasmical1693
enormous1704
pluperfect1802
pleonastic1835
?1577 J. Northbrooke Spiritus est Vicarius Christi: Treat. Dicing 19 When we sleepe too muche, all the moystures and humors of the bodie, with the naturall heate, retire to the extreme parts therof, no where purging or euacuating whatsoeuer is redundant.
1590 R. Parsons 2nd Pt. Bk. Christian Exercise ii. 50 The exceeding great wysedom, cunning, and prouidence, which he discouered in..mans bodie, wherein nothing was redundant, nothing defectiue, nothing possible to be added.
1642 T. Fuller Holy State iii. xv. 190 An Heteroclite in Nature, with some member defective or redundant.
1697 J. Dryden tr. Virgil Georgics i, in tr. Virgil Wks. 53 When the latent Vice is cur'd by Fire, Redundant Humours thro' the Pores expire. View more context for this quotation
1763 W. Emerson Method of Increments 23 To expunge any redundant factor, put in its stead any other factor which is equivalent to it.
1794 S. Williams Nat. & Civil Hist. Vermont 97 The beavers always leave sluices or passages near the middle for the redundant waters to pass off.
1855 T. B. Macaulay Hist. Eng. IV. xix. 320 Devising new schemes for the employment of redundant capital.
1869 E. A. Abbott Shakespearian Gram. 96 A somewhat different case of the redundant object.
1876 T. Bryant Pract. Surg. (ed. 2) II. xvii. 5 The redundant mass is to be dissected off.
1919 H. L. Warren Found. Classic Archit. v. 290 The Attic designer dispensed with the plinth, which seemed to him redundant.
1951 R. Campbell Light on Dark Horse iii. 67 This is all described in the Waygoose, so it would be redundant to retell it here.
1995 Denver Post 16 Jan. s8/6 Using the CO2 laser under local anesthesia in the office setting, some of the floppy redundant tissue at the back of the throat can be removed.
2. Characterized by superfluity or excess in some respect; having some additional or superfluous part, element, or feature; (of language) marked by verbosity and needless repetition. Also with in.
ΘΚΠ
the world > relative properties > quantity > sufficient quantity, amount, or degree > excessive amount or degree > [adjective] > provided with an excess of something > having some redundant feature
superfluea1398
redundant1604
1604 R. Dallington View of Fraunce sig. V2v That which Scaliger..saith of the Greeke tongue, that it is, redundans, redundant: the same may wee say of the French, that it is babillard, full of tittle tattle.
1655 T. Fuller Church-hist. Brit. ii. 54 This..will make our Belief to demurre to the Truth of his so frequent Miracles, being so Redundant in working them on Triviall Occasions.
a1690 S. Jeake Λογιστικηλογία (1696) 169 Improper Fractions are redundant.
1725 I. Watts Logick iii. ii. §6 All these four kinds of syllogisms..may be called redundant, because they have more than three propositions.
1751 S. Johnson Rambler No. 88. ⁋15 Milton frequently uses..the hypermetrical or redundant line of eleven syllables.
1830 J. Mackintosh Diss. Progress Ethical Philos. 102 The naturally copious and flowing style of the author is generally redundant.
1856 Macready in W. B. Scoones Four Cent. Eng. Lett. (1880) 513 You make inquiry of me whether it is true that, in my youth, my action was redundant, and that I took extraordinary pains to chasten it?
1885 Pall Mall Gaz. 26 Sept. 2/2 We shall gradually give up English in favour of Telegraphese, and Electric Telegraphese is as short and spare as Daily Telegraphese is longwinded and redundant.
1954 Encounter Aug. 55/1 Here, still surviving in an age of redundant dialogue and, worse still, explanatory narratage, are stories really told in pictures.
1981 Washington Post (Nexis) 5 Oct. a11 It's a wasteful approach to overregulate something in a redundant manner when you have such a tremendous potential for savings on the other side.
2002 A. J. McEvily Metal Failures i. 3 The use of both suspenders and a belt to support trousers is an example of a fail-safe, redundant approach.
3. Music. Of an interval: augmented; (also) exceeding the Pythagorean or diatonic syntonic equivalent by a comma. Of a chord: containing a redundant interval. Obsolete.
ΘΚΠ
society > leisure > the arts > music > musical sound > pitch > interval > [adjective] > others
Pythagorean1653
diazeuctic1698
redundant1753
direct1828
parallel1876
1753 Chambers's Cycl. Suppl. Redundant interval, in music, is used for an interval exceeding the truth by a comma. Some apply redundant to an interval exceeding a diatonic interval by a semitone minor; but this is more usually called a superfluous interval.
1797 Encycl. Brit. XVI. 36/1 What the French call une accord superflue, which we have translated a redundant chord.
1829 London Encycl. V. 652/2 In general, the redundant intervals, the sharps in the higher part, are proper by their severity to express violent emotions of the mind, such as anger and the rougher passions.
4.
a. Engineering. Of a component of a framework, or a force or moment on it: capable of being removed without causing loss of rigidity. Of a framework: having more members or supports than the minimum required to render it stable; containing more than the minimum number of components necessary for rigidity.
ΚΠ
1876 F. Jenkin Bridges in Encycl. Brit. IV. 315/2 If the members AD and CB were flexible cords there would be no redundant members.
1908 E. S. Andrews Theory & Design of Struct. xi. 290 Redundant frames have the following disadvantages:—(1) Any stress in one member caused by bad fitting or change of temperature causes stress in all the other members.
1953 C.-K. Wang Statically Indeterminate Struct. i. 4 In analyzing indeterminate structures it is necessary to have as many extra conditions, in addition to those of statics, as there are redundant reactions.
1981 Sci. Amer. June 45/3 The prestressed-concrete reactor vessel..is kept in compression at all times by a network of redundant, tensioned steel tendons.
2003 H. Al Nageim et al. Struct. Mech. (ed. 6) vi. 90 The redundant frame cannot be solved by the ordinary methods of statics. It is, therefore, also called a statically indeterminate or hyperstatic frame.
b. Engineering and Manufacturing Technology. Of a mechanism, device, etc.: containing duplicated parts such that its function is not impaired in the event of failure of a part; able to continue to function correctly when a part of it malfunctions.
ΚΠ
1952 C. R. Gates Mem. No. 20-76 (Jet Propulsion Lab., Calif. Inst. Technol.) p. ii A redundant system is one in which two or more components performing a given function are placed in parallel in order that the operation of the system may not be impaired by the failure of a single component.
1972 L. M. Harris Introd. Deepwater Floating Drilling Operations xi. 122 Most floating-drilling systems are equipped with dual hydraulic-control systems..The system is, thus, completely redundant.
1991 Professional Engin. July–Aug. 8/1 A dual redundant microprocessor based controller provides full automatic control.
1997 D. Singh Khalsa & C. Stauth Brain Longevity i. 11 If one neuron is killed, the brain can switch its memory connection through another neuron, and retain the memory. Neurologists call this redundant circuitry.
2001 Yahoo! Internet Life Nov. 82/1 The Internet was designed as a redundant, self-healing communications network capable of surviving nuclear attack.
5. Chiefly British.
a. Of a person: no longer needed in a particular job or place of employment; (hence) unemployed because of reorganization, mechanization, change in demand, etc.
ΘΚΠ
society > occupation and work > lack of work > [adjective] > (made) redundant
redundant1908
outplaced1981
excessed1987
1908 Times 28 Sept. 8/4 Instead of dismissing men of lower grades in the service, why not dismiss redundant officials?
1928 Britain's Industr. Future (Liberal Industr. Inq.) xxv. 358 We reach, finally, the pressing, but difficult, problem of the redundant workers. When everything possible has been done..there is little doubt that we shall still have to deal with a large surplus of labour in the coal-mining industry.
1958 Spectator 30 May 713/3 Over five thousand other men were rendered redundant.
1969 H. E. Bates Vanished World xii. 156 Nowadays,..it would no doubt be said that I became redundant. I prefer the old way: I was unexpectedly sacked.
2003 Daily Mail (Nexis) 30 May 15 York City Council fears as many as 45 teachers and classroom assistants will be made redundant, most because of stretched finances.
b. Of a thing (esp. a building): no longer used or needed for the original purpose.
ΚΠ
1950 J. Brooke Goose Cathedral iii. 51 The boathouse..had apparently become, as they say, ‘redundant’, and had been converted into a private residence.
1981 Daily Tel. 27 Jan. 12/5 Two redundant stone-built barns..have been converted into self-catering bunkhouses for walkers.
1987 T. Buxbaum Sc. Doocots 24/2 The adaptation of redundant battlemented windpumps [to house pigeons].
1995 Independent 19 Oct. (Suppl.) 2/4 Their modishly empty warehouse flats or houses converted from a redundant church.
2007 Independent (Nexis) 21 July 29 Dixons won't sell you a SLR film camera, and you can't get a typewriter ribbon at Ryman's for love or money. When was the last time you saw anyone with a Sony Walkman? One imagines a huge bonfire being built, in which all these redundant items are piled high, along with open-spool tape recorders, pub ashtrays and tea strainers.
6.
a. Mathematics and Linguistics. Of a letter, symbol, or other element in a sequence: contributing no additional information; (of a code, message, etc.) containing such elements; (of a feature of a language) that can be removed or disregarded without compromising intelligibility of the string containing it; predictable from its context; (of a language) containing elements or features of this kind. Also in extended use. Cf. redundancy n. 6a, 6b.
ΚΠ
1951 Jrnl. Royal Statist. Soc. B. 13 47 Since Q is always followed by U (except in mathematical formulae and abbreviations), the letter U after Q is redundant;..we can define and measure the ‘redundancy’ of a code.
1953 Language 29 36 The redundant features..operate in conjunction with the distinctive features, thereby facilitating the selective process on the part of the listener.
1954 G. A. Miller et al. in Jrnl. Gen. Psychol. 50 131 If a language is highly redundant, the relative information per symbol is much lower than it would be if successive symbols in a message could be chosen independently.
1961 Q. Rev. Biol. 36 28/2 He assumes that 3 bases specify an amino acid, but that some of the 64 possible combinations of bases (4 units taken 3 at a time) are redundant.
1968 Amer. Econ. Rev. 58 11 An appropriately redundant code can almost overcome the lack of reliability of the channel.
1979 E. H. Gombrich Sense of Order iv. 104 If the message reads that the meeting was suspended for lack of a q.u.o.r.u.m. every successive letter can be said to be increasingly redundant.
1980 J. R. Pierce Introd. Information Theory (ed. 2) viii. 165 This means that on the average, we must use a redundant code in which, for each 92 nonredundant message digits, we must include in some way 8 extra check digits.
1993 Atlantic Oct. 98/2 In German, for example, if you abbreviated every word you could still read the sentence, because most of the inflectional endings are redundant.
b. Computing. Of program code: executed but having no effect on the output of a program.
ΚΠ
1985 E. Pasero in G. Conte & D. Del Corso Multi-microprocessor Syst. for Real-time Applic. vii. 289 It is interesting..to verify the efficiency of the PLZ compiler: the redundant code is only twice the necessary minimal.
1993 S. A. Maguire Writing Solid Code 3 Modern commercial-grade compilers won't generate extra code for the comparison because it is redundant and can be optimized away.
2003 D. Wadsworth in P. Jackson et al. e-Business Fundamentals vii. 179 He did, in fact, write such software..which contained spelling and punctuation errors in the same places..and an identical piece of redundant code.
7. Genetics.
a. Of DNA: that does not code for a protein and serves no apparent purpose, typically occurring as repetitive sequences of nucleotides; (also) consisting of such DNA; cf. junk DNA n. at junk n.1 and adj. Compounds 2.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > DNA or RNA > of parts of DNA
sense1958
redundant1962
nucleosomal1975
antisense1977
1962 Jrnl. Theoret. Biol. 3 84 Some of the base pair changes are lethal, others..may occur in a genetically inert or redundant DNA region.
1993 E. N. K. Clarkson Invertebr. Palaeontol. & Evol. (ed. 3) ii. 38/1 Such unessential genetic material has been called ‘redundant’ or ‘junk’ DNA.
2005 M. Bjornerud Reading Rocks v. 170 Genomic sequencing of organisms, including humans, has revealed vast stretches of junk DNA, that is, repetitious and redundant segments of the genetic code that have no clear use.
b. Of the genetic code or a sequence of nucleotides: = degenerate adj. Additions.
ΚΠ
1965 Proc. National Acad. Sci. U.S.A. 53 385 In a highly redundant or degenerate code, there should be multiple sRNA's, each with the same amino acid specificity, but with different anticodons.
1990 EMBO Jrnl. 9 2570/2 cDNA clones of both cyclin A and cyclin B were isolated from a Drosophila adult female cDNA library using redundant oligonucleotide probes.
2006 N.Y. Times 25 July f2/6 A curious feature of the code is that it is redundant, meaning that a given amino acid can be defined by any of several different triplets.
II. Plentiful and related senses.
8. Plentiful, copious, abundant.
a. Of an immaterial thing, quality, etc. Now rare.
ΘΚΠ
the world > relative properties > quantity > sufficient quantity, amount, or degree > abundance > [adjective]
goodeOE
broadOE
fullOE
large?c1225
rifec1225
fulsomea1325
abundanta1382
plenteousa1382
copiousc1384
plentifula1400
ranka1400
aboundc1425
affluentc1425
aboundable?1440
seedy1440
manyfulc1450
ample1472
olda1500
richa1500
flowing1526
fertilent1535
wallingc1540
copy1546
abounding1560
fat1563
numbrous1566
good, great store1569
round1592
redundant1594
fruitful1604
cornucopian1609
much1609
plenty?a1610
pukka1619
redundant1621
uberant1622
swelling1628
uberous1633
numerousa1635
superfluent1648
full tide1649
lucky1649
redounding1667
numerose1692
bumper1836
prolific1890
proliferous1915
1594 T. Nashe Terrors of Night I. 375 Much more may I acknowledge all redundant prostrate vassailage to the royall descended Familie of the Careys.
a1624 R. Crakanthorpe Vigilius Dormitans (1631) xxxii. 409 Let us then see how well the Cardinal doth prove this redundant corruption in these Acts which now are extant of this fift Councell.
1695 J. Edwards Disc. conc. Old & New-Test. III. i. 3 Where Words are few, but the Sense is full and redundant.
1769 E. Bancroft Ess. Nat. Hist. Guiana 12 Those superundations..are the source of this redundant fertility.
1785 W. Cowper Task i. 226 With foliage of such dark redundant growth.
1853 E. K. Kane U.S. Grinnell Exped. viii. 57 The materials thus afforded in redundant profusion are rapidly converted into icebergs.
1893 H. P. Liddon et al. Life E. B. Pusey I. xvii. 397 This petition, marked by the redundant earnestness and sustained intensity, which were his characteristics.
1941 W. J. Cash Mind of South ii. 51 His remarkable tendency to seize on lovely words, to roll them in his throat, to heap them in redundant profusion one upon another until meaning vanishes.
b. Of a material object or substance. Obsolete.
ΘΚΠ
the world > relative properties > quantity > sufficient quantity, amount, or degree > abundance > [adjective]
goodeOE
broadOE
fullOE
large?c1225
rifec1225
fulsomea1325
abundanta1382
plenteousa1382
copiousc1384
plentifula1400
ranka1400
aboundc1425
affluentc1425
aboundable?1440
seedy1440
manyfulc1450
ample1472
olda1500
richa1500
flowing1526
fertilent1535
wallingc1540
copy1546
abounding1560
fat1563
numbrous1566
good, great store1569
round1592
redundant1594
fruitful1604
cornucopian1609
much1609
plenty?a1610
pukka1619
redundant1621
uberant1622
swelling1628
uberous1633
numerousa1635
superfluent1648
full tide1649
lucky1649
redounding1667
numerose1692
bumper1836
prolific1890
proliferous1915
the world > relative properties > quantity > sufficient quantity, amount, or degree > abundance > [adjective] > profuse, luxurious, or lush
ranka1325
exuberanta1513
profuse1542
lavish1576
profused1608
redundant1621
luxuriant1625
luxurious1644
lush1851
1621 R. Burton Anat. Melancholy i. i. iii. iv. 50 They ascribe all to this redundant melancholy, which domineeres in them.
1671 J. Milton Samson Agonistes 568 These redundant locks Robustious to no purpose clustring down. View more context for this quotation
1731 J. Arbuthnot Ess. Nature Aliments iv. 37 Notwithstanding the redundant Oil in Fishes they do not increase Fat so much as Flesh.
1755 Doddridge in Palmer Bk. of Praise (1862) 286 Thy hand in autumn richly pours Through all our coasts redundant stores.
1789 E. Darwin Bot. Garden: Pt. II ii. i. 201 Redundant folds of glossy silk surround Her slender waist, and trail upon the ground.
1815 W. Wordsworth Poems I. 227 Redundant are thy locks.
1848 A. Jameson Sacred & Legendary Art (1850) 49 Rubens gives us strong well-built youths with redundant yellow hair.
1876 H. James Roderick Hudson i. 10 The acquaintance..of a handsome, blonde young woman, of redundant contours, speaking a foreign tongue.
9. Characterized by copiousness, fullness, or abundance; teeming with. Also with of.
ΘΚΠ
the world > relative properties > quantity > sufficient quantity, amount, or degree > abundance > [adjective] > abundantly produced or producing
fecundc1400
facund?1504
bountifula1538
redundant?1611
fertilea1616
fruitful1629
prolific1665
productive1672
spawning1682
tousy1895
?1611 G. Chapman in tr. Homer Iliads iii. Comm. 48 In this Poesie, redundant, I affirme him, and rammish.
1625 in W. Jones Treat. Patience in Tribulation 33 True Poet, rap't into an extasie! And speaking out of a redundant braine.
a1653 G. Daniel Vpon Reading in Poems (1878) 24 Ye Copious East Ransack'd, & ioyn'd to ye Redundant West.
1755 E. Young Centaur iv, in Wks. (1757) IV. 203 Thou Father of all mercies! of mercy redundant, inexhaustible, source!
1815 R. Southey Ode Written Dec. 1814 xii in Minor Poems ii. 235 Queen of the Seas! enlarge thyself; Redundant as thou art of life and power.
1853 J. B. Marsden Hist. Early Puritans (ed. 2) 243 Henry Smith had preached at St. Clement Danes in rich redundant periods.
1876 J. S. Blackie Songs Relig. & Life 233 Growth the fairest and the sweetest In the green redundant bower.
1942 G. M. Trevelyan Eng. Social Hist. xviii. 560 Women were becoming more athletic..as their skirts became..shorter and less redundant; after the disappearance of the..long sweeping dress..lawn-tennis took the place of croquet.
1991 Jrnl. Royal Musical Assoc. 116 284 The Old Roman melody is more drawn out with melismas, more redundant, more ornate.
2003 C. Jencks Garden Cosmic Speculation iii. 120/1 John..added another octagonal window, so when I started to conceive of it as a library already it was redundant with eight-sided figures.
10.
a. Swelling up; overflowing. Obsolete.
ΘΚΠ
the world > the earth > water > flow or flowing > wave > movement of waves > [adjective] > swelling
proud1535
swellingc1550
rolling1562
redundanta1651
a1651 C. Love Grace (1652) xiv. 193 In Christ Jesus, as a fountain redundant over-flowing a never flowing [1652 new ed. & ever-flowing] to his people, for of his fulnesse we receive grace for grace.
1719 E. Young Busiris iv. 45 Redundant Nile, Broke from its Channel, overswells the Pass.
a1774 A. Tucker Light of Nature Pursued (1777) III. i. 75 Nor will it be incongruous to represent him..riding in whirlwinds, upheaving redundant seas.
b. Perhaps: swelling like waves, wave-like. Obsolete.
ΘΚΠ
the world > space > shape > unevenness > [adjective] > undulating
waved1577
redundant1667
rippling1670
wavya1701
undular1738
undulating1738
up and down1775
waving1810
undulous1862
1667 J. Milton Paradise Lost ix. 503 His circling Spires, that on the grass Floted redundant . View more context for this quotation
1726 W. Broome in A. Pope et al. tr. Homer Odyssey IV. xviii. 342 Down from the swelling loins, the vest unbound Floats in bright waves redundant o'er the ground.
11. Redounding, resulting. Obsolete. rare.
ΘΚΠ
the world > existence and causation > causation > effect, result, or consequence > [adjective]
corollaryc1449
consequent1509
resulting?a1560
sequent1575
pursuant1593
following1594
ensuing1604
eventual1607
attendant1617
emergentc1619
resultant1639
resultative1645
consecutive1647
reflexed1653
redundant1654
reflex1654
consequential1655
resultive1655
attending1682
propter hoc1889
ensuant1897
sequential1899
pursuivant1941
1654 E. Wolley tr. ‘G. de Scudéry’ Curia Politiæ 154 With glory or dishonour redundant to my self in those mighty undertakings.
B. n.
1. Something which is redundant; spec. a redundant chord or noun (see sense A. 3, redundant noun n. at Compounds). Also figurative. Obsolete.
ΘΚΠ
the mind > language > linguistics > study of grammar > a part of speech > noun > [noun] > noun with specific number of cases > with more than the usual number of cases
redundant1640
redundant noun1706
the world > relative properties > order > disorder > irregularity > unconformity > [noun] > deviation from rule or standard > one who or that which > by reason of excess
redundant1640
1640 T. Fuller Joseph's Coat 174 Let us not willingly bee Hetroclites from his will; either Defectiues, to doe too little, or Redundants, to doe too much.
1650 T. Fuller Pisgah-sight of Palestine ii. x. 217 The Giants bred in Philistia..being Heteroclites, redundants from the rules of nature.
1665 J. Brinsley Posing of Parts (rev. ed.) 106 Heteroclits called Redundants.
1797 Encycl. Brit. XVI. 36/2 The third redundant consists of two tones and a semi-tone.
1857 A. D. Sproat Endeavor towards Universal Alphabet 47 About two-thirds the numbers of types or letters are required..there being no redundants.
2. A person who is no longer needed in a particular job or place of employment. In later use esp.: a person who leaves or loses his or her job for this reason. Cf. redundancy n. 5.
ΘΚΠ
society > occupation and work > worker > one who does not work > [noun] > one who has been put out of office > one who is redundant
redundant1880
redundantee1963
1880 Daily News 7/2 Although a large number of the redundants are placed upon the staff of the establishment, those whose names do not appear..will..be ‘dropped’ without superannuation or compensation.
1914 Times 10/4 10/4 Offices offering voluntary retirement to redundants.
1975 Times 4 Aug. 12/1 A call for volunteer redundants has not fallen on deaf ears.
1998 B. Dicks et al. in J. Popay et al. Men, Gender Divisions & Welfare iii. xi. 288 What providers see is largely a community of men as frustrated redundants and women as harassed housewives.
3. Engineering. A redundant component of a framework (see sense A. 4a).
ΘΚΠ
society > occupation and work > industry > building or constructing > building or providing with specific parts > specific parts built or constructed > [noun] > framework > specific part of
chorda1877
stretcher-bar1883
redundant1953
1953 C.-K. Wang Statically Indeterminate Struct. i. 5 When the equations are solved and the redundants found, they can be put back on the given indeterminate structure and the remaining reactions solved by the equations of statics.
2006 Computers & Structures 84 773/1 The structure is twice statically indeterminate, and the redundants are selected as the internal forces of members 3 and 8.

Compounds

redundant hyperbola n. [after post-classical Latin hyperbola reduntans ( Newton Opticks (1704) ii. 145)] now rare a hyperbola having three infinite branches.
ΚΠ
1710 J. Harris Lexicon Technicum II Redundant Hyperbola is one so called, because it exceeds the Conical Sections, in the Number of its Hyperbolical Legs; being a Triple Hyperbola with six Hyperbolical Legs.
1811 C. Hutton Course Math. III. 196 In every redundant hyperbola, if neither term cy be wanting, nor b2 − 4ac = aea, the curve will have no diameter.
1866 A. Cayley Coll. Math. Papers (1892) V. 360 In the former case, the asymptotes are all real, and we have the redundant hyperbola.
1911 Encycl. Brit. VII. 660/1 The genera [of cubic curves] may be arranged as follows:—1,2,3,4 redundant hyperbolas, 5,6 defective hyperbolas, [etc.].
2007 Teaching of Math. 10 60 The curve intersects u in three different ways... A possible general point is (t2 : 1 − t : t3t) = (s : s3s2 : s2 − 1). Such a curve is called a redundant hyperbola.
redundant noun n. Grammar Obsolete a noun which deviates from the regular declension in having an extra case or number (cf. heteroclite adj. 1). Obsolete.
ΘΚΠ
the mind > language > linguistics > study of grammar > a part of speech > noun > [noun] > noun with specific number of cases > with more than the usual number of cases
redundant1640
redundant noun1706
1706 Phillips's New World of Words (new ed.) Redundant Nouns, (in Grammar) are those that have a Number or particular Case more than is usual.
1836 R. Hiley Elements Lat. Gram. 4 A Redundant noun is one that has more than one termination.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).
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adj.n.?1577
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