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单词 latent
释义

latentadj.n.

Brit. /ˈleɪt(ə)nt/, U.S. /ˈleɪtnt/
Forms: late Middle English latente, late Middle English– latent; also Scottish pre-1700 laittand.
Origin: Either (i) a borrowing from French. Or (ii) a borrowing from Latin. Etymons: French latent; Latin latent-, latēns.
Etymology: < (i) Middle French latent (French latent) hidden, not apparent (1370–2), or its etymon (ii) classical Latin latent-, latēns concealed, hidden, secret, use as adjective of present participle of latēre to hide, to be hidden < the same Indo-European base as ancient Greek λανθάνειν to be hidden.
A. adj.
1. Of a quality, force, phenomenon, etc.: hidden, concealed (occasionally with from); present or existing, but not manifest, exhibited, or developed. Opposed to patent.
ΘΚΠ
the mind > mental capacity > knowledge > hiding, concealing from view > keeping from knowledge > [adjective] > not evident, latent
potentiala1398
latentc1475
unevidentc1475
surreptitious1534
unmanifest1535
unapparent1554
unappearing1554
unmanifested1613
inevident1614
inapparenta1631
unobvious1643
immanifest1646
latitant1646
potentional1651
implicit1658
non-apparent1658
involute1669
unexposed1702
unostensible1766
c1475 ( in Eng. Hist. Rev. (1911) 26 514 (MED) And how be hit that such an opinyoun is diffused amonge you, peraventure the latent trowth is other wyse.
1593 J. Napier Plaine Discouery Reuelation St. Iohn i. xxvi. 41 No secretes, although they were seuenfoldlie sealed, could be latent or hid from him.
1651 R. Baxter Plain Script. Proof Infants Church-membership & Baptism 241 Though the Historicall part have some latent corruption in it.
1671 J. Webster Metallographia iii. 55 A metalline plastick principle latent in it.
1689 T. Plunket Char. Good Commander Prol. sig. Bv/1 New Necessities, &c. Will things produce, now latent from the wise.
1736 Bp. J. Butler Analogy of Relig. i. i. 23 We know not what latent Powers and Capacities they [sc. brutes] may be endued with.
a1797 E. Burke Ess. Abridgm. Eng. Hist. (rev. ed.) in Wks. (1812) V. 524 An exertion of a latent genius.
1849 T. B. Macaulay Hist. Eng. I. i. 100 Under this apparent concord a great schism was latent.
1873 W. Black Princess of Thule xv. 241 The latent force of character that underlay all her submissive gentleness.
1934 R. Lynd Both Sides of Road xxviii. 184 I must leave it to younger and better men, however, to develop these latent capacities.
1966 D. Du Maurier Don't look Now (1971) 82 Even the long stretch of shore that had seemed drear the night before had now a latent charm.
1992 Victorian Poetry 30 40 But that meaning is latent rather than active.
2. That is really but not obviously what is denoted by the noun; disguised, secret.
ΘΚΠ
the mind > mental capacity > knowledge > hiding, concealing from view > means of concealment > [adjective]
disguisyc1330
disguised1393
visured1577
latent1593
misguised1603
palliate1611
bemasked1620
dissembled1631
travested1656
incognito1676
incog1705
counterfeit1724
unconfessed1743
Waltham1748
camouflaged1918
1593 J. Napier Plaine Discouery Reuelation St. Iohn i. xxvi. 41 Then must he needs be a latent and not a patent enemie.
1642 S. Rutherford Peaceable Plea x. 145 Certainely no beleever is obliged to know the latent hypocrite.
a1680 J. Bargrave Pope Alexander VII (1867) i. viii. 19 This latent nuntio gave over his fruitless design.
1725 A. Pope tr. Homer Odyssey I. iii. 54 Then first approaching to the elder guest, The latent Goddess in these words addrest.
1803 W. Mavor Universal Hist. XIX. viii. 282 This made them consider queen Margaret as a French-woman, and a latent enemy to the kingdom.
1892 R. L. Stevenson Across Plains i. 26 I had been but a latent emigrant; now I was to be branded once more, and put apart with my fellows.
1965 C. Bukowski Let. 14 July in Screams from Balcony (1998) 176 I could no more give a damn whether you were a latent or an unlatent homo.
1997 A. Roy God of Small Things (1998) i. 5 An old lady..who often surfaced next to bodies at funerals (a funeral junkie? a latent necrophiliac?).
3. Of a material thing: hidden, concealed; not visible to the naked eye.
ΘΚΠ
the mind > mental capacity > knowledge > hiding, concealing from view > [adjective] > hidden
dighela1000
dernc1000
wriena1250
privyc1300
unshewedc1386
wrapped1398
quatc1425
tectc1440
blinda1522
coucheda1522
dark1532
lurkingc1540
velated1542
hiddena1547
inclusive1554
concealed1558
secret1559
occult1567
disguised1594
occulted1598
derned1600
shrouded1600
latent1605
abstrused1608
supposed1608
unshown1614
enshielda1616
retruse1623
dissembled1631
researched1636
recondite1649
delitescent1653
larved1654
tected1657
bedilt1660
bosomed1667
inhidden1674
underground1677
abditive1727
secreted1756
unextruded1808
unprotruded1812
undisplayed1822
larvated1832
dissimulated1838
latescent1852
squat1956
1605 F. Bacon Of Aduancem. Learning ii. f. 41v The more subtile of them [sc. passages and pores] appeare not in anatomyes, because they are shut and latent in dead bodies, though they be open and manifest in liue. View more context for this quotation
a1661 T. Fuller Worthies (1662) Staff. 46 His admirable writings of Mathematicks are latent with some private possessors.
1694 J. Scottow Narr. Planting Massachusetts Colony 15 A Snake..which Lay Latent in the Tender Grass.
1700 J. Dryden tr. Ovid Speeches Ajax & Ulysses in Fables 459 The glitt'ring Helm by Moonlight will proclaim The latent Robber.
1769 T. Gray Ode at Installation Duke of Grafton 7 Thy liberal heart..Shall raise from earth the latent gem To glitter on the diadem.
1826 W. Kirby & W. Spence Introd. Entomol. IV. 348 Latent (Latens) when it [sc. the post dorsolum] is covered by the mesothorax.
1926 Princeton Alumni Weekly 1 Oct. 47/3 The Chinese..whose land is blessed with extraordinary latent material resources.
2008 Z. Y. Blech Kosher Food Production (ed. 2) 296/2 Enzymes have been developed that break down the cellulose and pectin that serve to entrap the latent oil.
4. Medicine and Biology. Of a disease, disorder, infection, or infectious agent: present but not (yet) producing symptoms or clinical signs.
ΘΚΠ
the world > health and disease > ill health > a disease > symptom > [adjective] > without symptoms
silent1621
occult1651
latent1665
latic1684
symptomless1886
larval1897
non-clinical1913
subclinical1916
asymptomatic1932
1665 M. Nedham Medela Medicinæ iii. 63 That after the committing of that Folly with an unwholsom Person, though there appear no Sign nor Symptom of a Disease for the present, yet it may be latent and lurkking within the Body.
1684 tr. T. Bonet Guide Pract. Physician vi. 226 In a Phlegmatick Ague, which the Arabians call Latick, or Latent.
1714 D. Turner De Morbis Cutaneis ii. vi. 206 But if the Illness arise from some latent Chancre, you are to purge off the pocky Virus with some brisk Cathartick.
1805 Med. & Physical Jrnl. 14 127 Unless we suppose the pain he has in his joints to arise from latent venereal virus.
1834 J. Forbes tr. R. T. H. Laennec Treat. Dis. Chest (ed. 4) 97 The constant presence of a catarrhal affection of the lungs, either latent or manifest.
1886 N.Y. Med. Jrnl. 4 Dec. 626/2 Heterophoria may, like hypermetropia, be partly or entirely latent.
1925 Amer. Mercury Dec. 461/1 They perhaps constitute the site of latent infection in cases that have not yet developed clinical signs.
1998 A. Fadiman Ex Libris 34 He was informed there that he had acute retinal necrosis, improbably caused by a chicken-pox virus that had been latent for more than eighty years.
2012 Medicine 40 341/2 In 90% of the otherwise healthy population, it will never become active. This situation, which is usually associated with a positive skin test to tuberculo-protein, is termed ‘latent tuberculosis’.
5. Botany. Designating an undeveloped and dormant feature of a plant. Frequently in latent bud.
ΘΚΠ
the world > life > biology > biological processes > development, growth, or degeneration > [adjective] > latent (of features, abilities, etc.)
latent1787
persistent1940
1787 E. Darwin et al. tr. C. Linnaeus et al. Families of Plants I. 263 The rudiments of eight anthers latent in the bottom of the flower.
1856 J. S. Henslow Dict. Bot. Latent, lying dormant till excited by some particular stimulus; as the adventitious buds occasionally developed in trees.
1909 P. T. Maw Pract. Forestry 149 With some trees, especially Oak and Chestnut, an unduly thick canopy will often cause..the flushing of latent buds along the stem.
1972 Winnipeg Free Press 14 Apr. 9/1 If a branch is cut back, the latent buds nearest the cut break dormancy and start to grow.
2003 K. D. Cutler Pruning Trees, Shrubs & Vines 14 Woody plants also have latent buds, less visible dormant buds that lie under the bark.
6. Designating electric charge on an object that is balanced by an equal and opposite charge, and so is not apparent (now historical); (also) designating static electricity; chiefly in latent electricity.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > electricity > [adjective] > relating to static electricity
latent1789
electrostatic1844
electrostatical1846
heterostatic1867
static1956
1789 Philos. Trans. (Royal Soc.) 79 283 Whenever a jar is charged, the greatest part of the electricity becomes latent on account of the compensation.
1885 H. W. Watson & S. H. Burbury Math. Theory Electr. & Magn. I. 83 The fluid of either kind in any electrified body in excess of that of the opposite kind is called the Free Electricity of the body, and the remaining fluids of the body, consisting of equal amounts of fluids of opposite kinds, together constitute what is called the Latent, Combined or Fixed Electricity of the body.
1921 Proc. Royal Soc. A. 99 5 Such release of latent electricity should not appear on surfaces constituted by equal numbers of the two ions.
1984 A. Desai In Custody ii. 24 This made his pale green nylon shirt crackle with latent electricity.
2008 D. Veith DeLancey's Stapler iii. 144 The pajamas crackled with latent electricity as Drucker yanked them free.
7.
a. Originally Photography. Designating an invisible image formed in a photographic (or radiographic) emulsion by exposure to light (or X-rays), which can be rendered visible by development; (in wider use) designating an image, however formed, that is visible only under certain conditions or after processing.
ΘΚΠ
the world > physical sensation > sight and vision > invisibility > [adjective] > of photograph
latent1841
society > leisure > the arts > visual arts > photography > a photograph > [adjective] > of invisible image before development
latent1841
1841 H. F. Talbot in London, Edinb., & Dublin Philos. Mag. 19 165 But the impression is latent and invisible, and its existence would not be suspected by any one who was not forewarned of it by previous experiments.
1865 H. Watts Dict. Chem. III. 693 In order to develop the latent image, the [Daguerreotype] plate was exposed to the action of the vapour of mercury.
c1865 J. Wylde Circle of Sci. I. 157/2 The latent picture becomes developed.
1900 Photo-miniature Feb. 527 The nature of the latent image has so far eluded all investigation.
1939 J. E. Mack & M. J. Martin Photogr. Process ix. 313 Developing-out papers (‘D.O.P.’) in which the latent image formed by exposure is subsequently developed.
1992 Numismatist Mar. 312/3 A sophisticated array of security printing features were incorporated, some new to Bahamian notes, including a latent image.
2005 Sci. Amer. (U.K. ed.) Dec. 97/1 (caption) A pixelized phosphor sheet traps electrons excited by x-rays, producing a latent image.
b. In forensic science: designating an impression or other evidential trace which is invisible or barely visible to the naked eye until treated or enhanced. Cf. B.See also latent fingerprint n., latent print n. at Compounds.
ΚΠ
1892 F. Galton Finger Prints iii. 46 Pressure of the hand on the polished surface of glass or metal leaves a latent image very difficult to destroy.
1937 Discovery Feb. 56/2 When a latent print is discovered, the area can receive a more liberal fuming to yield the maximum contrast. The amount of time required for fuming a single latent image is variable.
1999 PC Mag. 6 Apr. 199/2 Fingerprint recognition technology... Oil and dirt from fingers can collect on the sensing area, leaving a kind of ghost impression called a latent image.
2000 W. J. Bodziak Footwear Impression Evid. (ed. 2) i. 18 The likelihood for an item of footwear to leave either a visible or a detectable latent impression exists in many situations.
2012 R. M. Gardner Pract. Crime Scene Processing & Investig. (ed. 2) xi. 361 Chemical enhancement of latent blood using luminol and fluorsecein allows the technician to visualize latent bloodstain patterns that are either too light to see or have been washed up in some fashion.
8. Social Sciences and Statistics. Designating a variable which cannot be observed or directly measured. Also (of a method, etc.): relating to such variables.
ΘΚΠ
society > communication > information > hint or covert suggestion > [adjective] > latent
educible1704
latent1937
the world > relative properties > number > probability or statistics > [adjective] > relating to variables > not directly observable
latent1937
1937 Jrnl. Psychol. 3 350 The results on the manifest and on the latent variables will be given separately.
1950 P. F. Lazarsfeld in S. A. Stouffer Measurem. & Prediction x. 362 (heading) The logical and mathematical foundation of latent structure analysis.
1952 W. J. Goode & P. K. Hatt Methods in Social Res. xvii. 286 One alternative..was to abandon the factorial approach and in doing so abandon the concept of a latent-attitude continuum.
1961 J. Rothenberg Measurem. Social Welfare iv. xi. 290 The spatial arrangement of alternatives is a uni-dimensional scale of some single ‘latent attribute’ calibrated by the particular alternatives.
1974 Amer. Jrnl. Sociol. 79 1192 Y denotes latent self-perceived membership in the leading crowd and Z denotes latent attitude toward the leading crowd.
2003 R. G. Netermeyer et al. Scaling Procedures i. 4 Latent constructs are not directly observable or quantifiable.
B. n.
In forensic science: a latent impression (see sense A. 7b); esp. a latent fingerprint.
ΘΚΠ
society > communication > indication > marking > a mark > trace or vestige > [noun]
signa1382
stepa1382
ficchingc1384
marka1400
tracesc1400
scentc1422
footstep?a1425
tidinga1440
relicc1475
smell?a1505
stead1513
vestigy1545
print1548
token1555
remnant1560
show1561
mention1564
signification1576
footing?1580
tract1583
remainder1585
vestige1602
wrack1602
engravement1604
footstepping1610
resent1610
ghost1613
impression1613
remark1624
footprint1625
studdle1635
vestigium1644
relict1646
perception1650
vestigiary1651
track1657
symptom1722
signacle1768
ray1773
vestigia1789
footmark1800
souvenir1844
latent1920
1920 Jrnl. Amer. Inst. Criminal Law & Criminol. 10 488 It was clearly proved that the latent was of the right ring finger of one F. C.
1939 E. S. Gardner D.A. draws Circle (1940) iv. 48 ‘Any latents, Bob?’ the sheriff asked.
1973 A. Hunter Gently French iii. 23 The recognisable latents were either Quarles' or off-record, probably innocent.
2008 J. Fisher Forensics under Fire x. 170 Michael Grubb compared the seven exemplars with the crime-scene ear latent.
2011 J. Mariotte Burning Season xxi. 219 It looks like he did a quick wipe job, but he left a latent on the bottom of the chair arm.

Compounds

latent ambiguity Law an ambiguity in a document which only becomes apparent in the light of knowledge gained from extrinsic evidence.
ΚΠ
1783 J. Brown Rep. High Court Parl. 7 446 It was conceived to be an established rule of evidence, not to receive parol proof, or any other species of external evidence, to expound the words of an agreement reduced into writing, except where there is some latent ambiguity; as to explain which person was meant, where there are two of the same name, &c.
1893 Harvard Law Rev. 6 438 It became common to say that the first effort must be to disclose the existence of a latent ambiguity by extrinsic evidence.
2010 L. E. Espenschied Contract Drafting vi. 88 The latent ambiguity arose when the parties discovered that there were two ships called ‘Peerless’ in the same harbor.
latent caloric n. Physics (now historical) = latent heat n.In quot. 1798 perhaps conceived as an invisible fluid (see caloric n. 1).
ΘΚΠ
the world > matter > physics > electromagnetic radiation > heat > [noun] > latent heat
latent heatc1757
latent caloric1798
1798 R. Harrington Some New Exper. Heat 60 Inflammable air in its aerial state, possessing its latent caloric, cannot unite with pure air.
1815 J. Smith Panorama Sci. & Art II. 334 Latent caloric may become sensible in a variety of ways.
1912 Science 13 Sept. 333/1 The molecular latent caloric of vaporization is the same for all such compounds.
2006 Hist. Stud. Physical & Biol. Sci. 37 5 Espyʼs ideas on the steam power of the atmosphere and on the importance of latent caloric were widely accepted by such influential scientists.
latent energy n. Physics (now rare) energy which a body or substance possesses by virtue of its position, state, or shape; = potential energy n.
ΘΚΠ
the world > matter > physics > energy or power of doing work > [noun] > specific types of energy
internal energy1654
positive energy1807
chemical energy1809
energy1852
potential energy1853
atomic energy1854
latent energy1854
static energy1869
free energy1884
rest energy1925
nuclear energy1958
radial energy1959
tangential energy1959
geothermal1960
dark energy1998
quintessence1998
1853 W. J. M. Rankine in London, Edinb., & Dublin Philos. Mag. 4th Ser. 5 106 All conceivable forms of energy may be distinguished into two kinds; actual or sensible, and potential or latent.]
1854 W. J. M. Rankine in Proc. Philos. Soc. Glasgow 3 276 Potential or latent energy..is measured by the product of a change of state into the resistance against which that change is made.
1874 Q. Jrnl. Sci. 4 188 Latent or potential energy of another kind may and probably does exist, viz., the latent energy of a bent spring.
1931 North Central Assoc. Q. Mar. 464/1 A stone..hoisted by a steam engine to the fifth floor of a building..holds the energy used to lift it up as energy of position, latent or potential energy. When it falls this latent energy becomes kinetic or active energy.
latent fingerprint n. a fingerprint which is invisible or barely visible to the naked eye (see sense A. 7b); = B.
ΘΚΠ
society > communication > indication > marking > a mark > trace or vestige > [noun] > fingerprint
finger marka1661
fingerprint1737
finger impression1856
thumbprint1900
print1914
latent fingerprint1919
lift1951
1919 Sci. Amer. Suppl. 13 Sept. 174/1 Kockel recommends as the most suitable powder for making latent fingerprints visible the argenton powder.
1956 ‘E. McBain’ Cop Hater (1963) xix. 145 The tech crew dusted the latent fingerprints.
1990 J. Nance Final Approach xxi. 321 The latent fingerprints of whoever wrote it and handled it are still there.
latent function n. Sociology an unintended consequence of social actions, structures, etc., which is not recognized by the participants; cf. manifest function n. at manifest adj. and adv. Compounds.
ΘΚΠ
the world > action or operation > behaviour > [noun] > social cause or effect in behaviour
social causation1848
latent function1949
1949 R. K. Merton Social Theory i. 51 Latent functions..being those which are neither intended nor recognized.
1971 Pacific Sociol. Rev. 14 206 It seems possible that the professional staff's projection of importance of such social events to the museum membership..is a latent function of their frustrated professional aspirations.
2013 P. Marina Getting Holy Ghost ix. 252 Whatever else can be said about the manifest and latent functions for the black church, we have to remember that churches serve their followers.
latent homosexuality n. sexual attraction towards members of one's own sex which is repressed, or that is manifested indirectly.
ΚΠ
1892 C. G. Chaddock tr. R. von Krafft-Ebing Psychopathia Sexualis iii. 187 Careful examination of the so-called acquired cases makes it probable that the predisposition also present here consists of a latent homo-sexuality, or, at least, bi-sexuality.
1968 F. Exley Fan's Notes iv. 173 Oh, I know the Freudian voodoo, the feelings of inadequacy that sometimes come to a man, the latent homosexuality, and so forth... But it's all hogwash.
2002 Hotdog June 112/3 The bachelors who assume care duties of Mary are all screw-ups... One sees the child purely as a means to disguise his latent homosexuality.
latent learning n. Psychology (esp. with reference to animals) learning that is unintentional and unmotivated or that occurs without any apparent reinforcement.
ΘΚΠ
society > education > learning > [noun] > types of learning
opsimathya1656
latent learning1929
hypnopaedia1932
naming of (the) parts1946
sleep-learning1953
sitting next to (also by, with) Nelly1963
hidden curriculum1964
the mind > mental capacity > psychology > developmental psychology > acquisition of knowledge > types of learning > [noun]
rote learning1842
trial and error1894
imitation1895
rehearsal1902
latent learning1929
e-learning1997
1929 H. C. Blodgett in Univ. Calif. Publ. Psychol. 4 133 During the non-reward period, the rats were developing a latent learning of the maze which they were able to utilize as soon as reward was introduced.
1930 Elem. School Jrnl. 31 233 These problems..come under the more general topic of latent learning in reading, a field in which little work has been done.
2007 Proc. Royal Soc. B. 274 1505/1 We used the classical model of house-hunting in Temnothorax albipennis ants to determine if ants are able to reconnoitre and exhibit latent learning.
latent partner n. Business (now rare) a partner whose existence is not disclosed.
ΘΚΠ
society > occupation and work > worker > workers according to type of work > non-manual worker > businessman > [noun] > partner > types of partner
sleeping partner1785
latent partner1791
principal1806
special partner1811
silent partner1818
limited partner1824
sleeper1901
limited1953
1791 London Chron. 26 July 91/3 The law was, that all latent partners were liable for the acts of the ostensible person in the firm in any business in which such persons had any concern.
1864 Glasgow Herald 25 Feb. 1/7 Mr. Wilson was merely a latent Partner, and took no active interest in the Concern.
1913 Act 3 & 4 George V c. 20 §90 Any latent partner of a company whose estates have been sequestrated.
latent period n. (a) Medicine the period of time during which a disease, infectious agent, etc., is present without producing symptoms or clinical signs, or between exposure to a pathogenic agent and the development of disease; an instance of this; cf. sense A. 4; (b) Physiology the period of time between a stimulus and a response, esp. in muscle (see also latency n. 2a); an instance of this; also in extended use.
ΘΚΠ
the world > health and disease > ill health > a disease > [noun] > stage of disease > before manifestation of symptoms
latent period1793
latency period1877
the world > life > biology > biological processes > movement > movement in response to stimuli > [noun] > period between stimulus and response
latent period1793
1793 J. Haygarth Sketch Plan to Exterminate Casual Small-pox II. 539 To the small collection of facts, recorded in the inquiry, to determine the latent period of casual infection, five cases are added of unquestionable authority.
1837 M. Hall Princ. Theory & Pract. Med. 143 A latent period of from ten to fourteen days intervenes between exposure [to rubeola] and the development of the febrile symptoms.
1877 M. Foster Text Bk. Physiol. i. ii. 37 A phase antecedent to any visible alteration in the muscle..during which invisible preparatory changes are taking place in the nerve and muscle, is often called the ‘latent period’.
1926 L. Hogben Compar. Physiol. viii. 140 The rate of conduction can be determined directly by observing the difference in the latent period of muscular contraction, when a nerve-muscle preparation is stimulated at points along the nerve separated by a measured distance apart.
1947 Radiology 49 361/2 The incidence of bone tumors was approximately proportional to the dose administered, and the latent period—in no case less than about 200 days—increased gradually with decreasing dose.
1996 H. G. Cragon Memory Syst. & Pipelined Processors i. 1 Latency or latent period is the total time associated with the processing (from excitation to response) of a particular data unit at a phase in the computing process.
2007 K. T. Palmer et al. Fitness for Work (ed. 4) xviii. 421 Mesothelioma..arises after a long latent period—rarely less than 20 years from first exposure, and typically 35–40 years.
latent print n. a latent impression (see sense A. 7b); esp. = latent fingerprint n.
ΘΚΠ
society > communication > indication > marking > a mark > trace or vestige > [adjective] > type of fingerprint
latent print1910
1910 Jrnl. Amer. Inst. Criminal Law & Criminol. 1 634 Time and time again the detectives in New Scotland Yard and in India have found latent prints.
1974 G. F. Newman Price viii. 242 Latent prints brought out on the non-absorbent surfaces with grey powder for photographing.
2000 P. Cornwell Last Precinct (2001) 276 Latent prints are actually transferred to an object because the friction ridge surfaces of fingers and palms have oily residues on them.
latent root n. Mathematics a quantity which, when subtracted from each entry in the diagonal of a square matrix, makes the determinant (determinant n. 3) of the resulting matrix equal to zero; = eigenvalue n.
ΘΚΠ
the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > array > matrix > operation or result of
transposition1858
latent root1883
involutant1890
character1931
commutator1935
trace1938
1883 J. J. Sylvester in London, Edinb. & Dublin Philos. Mag. 16 267 It will be convenient to introduce here a notion.., viz. that of the latent roots of a matrix.
1958 R. V. Andree Sel. Mod. Abstr. Algebra ix. 195 In quantum mechanics and elsewhere, the terms latent roots, proper value, eigenvalue, and eigenwerte are often used in place of characteristic root.
2006 D. Child Essent. Factor Anal. (ed. 3) iii. 60 Starting at the first latent root the curve falls steeply.
latent virus n. (originally) any morbid matter or morbific agent that is difficult to detect (cf. virus n. 2a); (in later use) spec. any virus (virus n. 2b) that infects a plant or animal without causing apparent disease.
ΘΚΠ
the world > life > biology > organism > micro-organism > virus > [noun] > types of
latent virus1750
influenza virus1880
poxvirus1891
filter-passer1906
mosaic virus1914
bacteriophage1921
herpes virus1925
Rous sarcoma virus1925
Rous virus1925
papillomavirus1935
poliovirus1939
Semliki Forest virus1944
actinophage1947
mycophage1947
mengovirus1949
tumour virus1950
Zika1952
mycobacteriophage1953
Sindbis virus1953
myxovirus1954
echovirus1955
RNA virus1955
adenovirus1956
SV1956
arborvirus1957
enterovirus1957
foamy virus1957
respiratory syncytial virus1957
polyoma1958
parainfluenza1959
reovirus1959
arbovirus1960
cytomegalovirus1960
TMV1960
vacuolating agent or virus1960
Coxsackie virus1961
rhinovirus1961
RSV1961
papovavirus1962
paramyxovirus1962
picornavirus1962
mycophage1963
parvovirus1965
rhabdovirus1966
Ross River virus1966
coronavirus1968
EBV1968
Epstein–Barr virus1968
leukovirus1968
CMV1969
arenovirus1970
oncornavirus1970
togavirus1970
alphavirus1971
calicivirus1971
Dane particle1971
flavivirus1971
flavovirus1971
maedi1971
orbivirus1971
mycovirus1972
visna-maedi virus1972
flu virus1973
maedi-visna virus1973
corona1974
orthopoxvirus1974
rotavirus1974
whitepox1974
retravirus1975
Ebola virus1976
morbillivirus1976
retrovirus1976
Ebola1977
lentivirus1979
reassortant1979
HTLV1980
morbilli1981
filovirus1982
LAV1983
CV1985
HIV1986
HIV virus1987
C-192020
Covid2020
Covid-192020
CV-192020
1750 S. Sharp Crit. Enq. Surg. iv. 195 There is also sometimes a latent Virus in the Obstructions, when a Salivation is also necessary.
1848 Lancet 14 Oct. 422/2 I do not suppose mere intercourse with one who has had syphilitic symptoms, either primary or secondary, but at the time free from either, could communicate a latent virus.
1931 Science 6 Feb. 155/2 The distribution of the latent virus in tubers of commercial potatoes was discussed.
1951 Nature 30 June 1061/1 The presence of latent or ‘silent’ viruses in plants and other organisms is not, of course, new.
1962 W. Carter Insects in Relation to Plant Dis. viii. 329 Latent viruses are often important components of virus complexes.
2007 J. Minarovits et al. Latency Strategies Herpesviruses iii. 57 Sporadic reactivation of the latent virus takes place throughout life.

Derivatives

ˈlatentness n. rare latency.
ΘΚΠ
the mind > mental capacity > knowledge > hiding, concealing from view > [noun] > concealed condition
hiding?c1225
concealment1608
latency1615
delitescence1632
concealedness1635
latentness1660
abscondment1694
delitescencya1697
occultation1758
latence1794
caving1867
1660 J. Durham Comm. Revelation xii. 531 Her latentnesse and inconspicuousnesse.
1852 H. Melville Pierre xv. iii. 308 In naturally strong-minded men..those great and sudden emergencies..serve to call forth all their generous latentness.
2007 Jrnl. Royal Statist. Soc. A. 170 329 None of the clusters..could be associated with a skewed latent distribution. Admittedly, the layer of latentness grants some flexibility in this respect.
This entry has been updated (OED Third Edition, March 2015; most recently modified version published online March 2022).
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adj.n.c1475
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