long-termadj.adv.

Brit.

/ˌlɒŋˈtəːm/, U.S.

/ˈlɔŋˈˌtərm/,

/ˈlɑŋˈˌtərm/

Origin: Formed within English, by compounding. Etymons: long adj.¹, term n.

Etymology: < long adj.¹ + term n. Compare short-term adj. Compare earlier long-time adj.

A. adj.

That lasts for, relates to, or involves a relatively long period of time; maturing or becoming effective only after a long period.

ΘΚΠ

the world > time > duration > [adjective] > long-lasting or enduring

longeOE

longsomeeOE

long of lifeOE

lastinga1225

cleaving1340

continualc1340

dwellingc1380

long-livinga1382

everlastingc1384

long-duringa1387

long-lasting?a1400

long-liveda1400

broadc1400

permanable?c1422

perseverant?a1425

permanentc1425

perdurable?a1439

continuedc1440

abiding1448

unremoved1455

eternalc1460

long-continued1464

continuing1526

long-enduring1527

enduring1532

immortal1538

diuturn?1541

veterated1547

resiant?1567

stayinga1568

well-wearinga1568

substantive1575

pertinacious1578

extant1581

ceaseless1590

marble1596

of length1597

longeval1598

diuturnal1599

nine-lived1600

chronic1601

unexhausted1602

chronical1604

endurable1607

continuant1610

indeflourishing1610

aged1611

indurant1611

continuatea1616

perennious1628

seculara1631

undiscontinueda1631

continuated1632

untransitory1632

long-spun1633

momently1641

stative1643

outliving1645

constant1653

long-descended1660

voluminousa1661

perduring1664

perdurant1671

livelong1673

perennial1676

longeve1678

consequential1681

unquenched1703

lifelong1746

momentary1755

inveterate1780

stabile1797

persistent1826

unpassing1831

all-time1846

year-long1846

teak-built1847

lengthful1855

long-term1867

long haul1873

sticky1879

week-to-week1879

perenduring1883

long-range1885

longish1889

long-time1902

long run1904

long-life1915

1867 Jrnl. Statist. Soc. 30 28 Prisoners sentenced for less than six months, and long-term prisoners with less than six months of unexpired sentence, should be released.

1889 Polit. Sci. Q. 4 624 The high premium on long-term government bonds.

1937 Discovery June 178/1 A long-term programme of development.

1959 A. Lejeune Crowded & Dangerous xii. 134 The long-term future could look after itself.

1972 Listener 21 Dec. 854/2 Courses of action are followed without regard for their long-term consequences.

1991 M. Mackie Gender Relations Canada ix. 248/2 Both parents had to be placed in long-term care facilities in their hometown.

2012 N. Silver Signal & Noise xii. 408 Global warming is a long-term problem that might require a short-term solution.

B. adv.

In or over the long term; on a long-term basis.In quot. 1947: with regard to the long-term interest rate.

ΘΚΠ

the world > time > duration > [adverb] > for a long time

longeOE

longOE

longlyOE

longsomelyOE

yorec1275

lastingly1372

longsa1450

for longa1530

in length1566

with the longest1636

stayingly1648

eternally1664

sometime1801

chronically1854

forever1861

somewhile1864

for the duration1916

long-term1947

secularly1971

1947 Hansard Commons 19 May 2123 We were then carrying through the cheap money drive with the object of arriving at a basis of 2½ per cent, longterm.

1961 Financial Times 4 Oct. 10/2 The Government is determined to think long-term about economic problems.

1974 Times 28 Dec. 9/6 Ordinary table wines..must not be kept long-term in the refrigerator.

2007 Mod. Railways May 23/1 The train has to be able to use whichever form of mobile power source is available long term.

Compounds

Long Term Evolution n. a mobile communications standard based on Internet Protocol, designed to significantly increase the speed and capacity of wireless data networks.

ΚΠ

2005 Wireless Week 1 Sept. 20/2 Enter Super 3G, which is more properly given the long-winded name UMTS Terrestrial Radio Access Node Long Term Evolution (UTRAN LTE) and sometimes is called 3.99G, or Evolved UMTS.

2008 Financial Times 6 Mar. 26 Long Term Evolution could result in the long sought-after convenience of being able to use the same handsets in Europe, the US and Asia.

2015 E. C. Baig & B. LeVitus iPad Mini for Dummies (ed. 3) xv. 268 LTE stands for Long Term Evolution. What it really stands for is speed.

long-term memory n. the phase or type of memory responsible for the storage of information for an extended period of time (usually understood as ranging from about 30 seconds to many years); contrasted with short-term memory; abbreviated LTM.

ΚΠ

1940 Geography 25 189 Consideration of its loadings suggests that the fourth factor is concerned with immediate memory, rather than long-term memory.

1971 Jrnl. Gen. Psychol. 85 51 The effectiveness of extracting information from long-term memory may depend on short-term load.

2012 Vanity Fair Sept. 325/2 Now 89 years old, she experiences episodic confusion about time and dates, but has a ‘Panavision perfect’ long-term memory, according to her daughter.

long-term potentiation n. Physiology long-lasting facilitation of neurotransmission at a synapse following natural or artificial stimulation of the synapse under specific conditions, which is believed to be a cellular mechanism of plasticity in the brain and to be involved especially in learning and memory; abbreviated LTP.

ΚΠ

1969 R. Llinás & C. Nicholson in Neurobiol. Cerebellar Evol. & Devel. 460/1 (heading) Long-term potentiation of the parallel fiber-Purkinje cell synapse.

1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) xix. 1100 The underlying rule in the hippocampus seems to be that long-term potentiation occurs on any occasion where a presynaptic cell fires (once or more) at a time when the postsynaptic membrane is strongly depolarized.

2001 Business Week 11 June 96/2 [The company] is developing drugs that will help the brain convert transient short-term memories into stable long-term ones. This process, called long-term potentiation, is compromised in the aging brain and in Alzheimer's victims.

This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022).

单词	long-term
释义	long-termadj.adv. Brit. /ˌlɒŋˈtəːm/, U.S. /ˈlɔŋˈˌtərm/, /ˈlɑŋˈˌtərm/ Origin: Formed within English, by compounding. Etymons: long adj.¹, term n. Etymology: < long adj.¹ + term n. Compare short-term adj. Compare earlier long-time adj. A. adj. That lasts for, relates to, or involves a relatively long period of time; maturing or becoming effective only after a long period. ΘΚΠ the world > time > duration > [adjective] > long-lasting or enduring longeOE longsomeeOE long of lifeOE lastinga1225 cleaving1340 continualc1340 dwellingc1380 long-livinga1382 everlastingc1384 long-duringa1387 long-lasting?a1400 long-liveda1400 broadc1400 permanable?c1422 perseverant?a1425 permanentc1425 perdurable?a1439 continuedc1440 abiding1448 unremoved1455 eternalc1460 long-continued1464 continuing1526 long-enduring1527 enduring1532 immortal1538 diuturn?1541 veterated1547 resiant?1567 stayinga1568 well-wearinga1568 substantive1575 pertinacious1578 extant1581 ceaseless1590 marble1596 of length1597 longeval1598 diuturnal1599 nine-lived1600 chronic1601 unexhausted1602 chronical1604 endurable1607 continuant1610 indeflourishing1610 aged1611 indurant1611 continuatea1616 perennious1628 seculara1631 undiscontinueda1631 continuated1632 untransitory1632 long-spun1633 momently1641 stative1643 outliving1645 constant1653 long-descended1660 voluminousa1661 perduring1664 perdurant1671 livelong1673 perennial1676 longeve1678 consequential1681 unquenched1703 lifelong1746 momentary1755 inveterate1780 stabile1797 persistent1826 unpassing1831 all-time1846 year-long1846 teak-built1847 lengthful1855 long-term1867 long haul1873 sticky1879 week-to-week1879 perenduring1883 long-range1885 longish1889 long-time1902 long run1904 long-life1915 1867 Jrnl. Statist. Soc. 30 28 Prisoners sentenced for less than six months, and long-term prisoners with less than six months of unexpired sentence, should be released. 1889 Polit. Sci. Q. 4 624 The high premium on long-term government bonds. 1937 Discovery June 178/1 A long-term programme of development. 1959 A. Lejeune Crowded & Dangerous xii. 134 The long-term future could look after itself. 1972 Listener 21 Dec. 854/2 Courses of action are followed without regard for their long-term consequences. 1991 M. Mackie Gender Relations Canada ix. 248/2 Both parents had to be placed in long-term care facilities in their hometown. 2012 N. Silver Signal & Noise xii. 408 Global warming is a long-term problem that might require a short-term solution. B. adv. In or over the long term; on a long-term basis.In quot. 1947: with regard to the long-term interest rate. ΘΚΠ the world > time > duration > [adverb] > for a long time longeOE longOE longlyOE longsomelyOE yorec1275 lastingly1372 longsa1450 for longa1530 in length1566 with the longest1636 stayingly1648 eternally1664 sometime1801 chronically1854 forever1861 somewhile1864 for the duration1916 long-term1947 secularly1971 1947 Hansard Commons 19 May 2123 We were then carrying through the cheap money drive with the object of arriving at a basis of 2½ per cent, longterm. 1961 Financial Times 4 Oct. 10/2 The Government is determined to think long-term about economic problems. 1974 Times 28 Dec. 9/6 Ordinary table wines..must not be kept long-term in the refrigerator. 2007 Mod. Railways May 23/1 The train has to be able to use whichever form of mobile power source is available long term. Compounds Long Term Evolution n. a mobile communications standard based on Internet Protocol, designed to significantly increase the speed and capacity of wireless data networks. ΚΠ 2005 Wireless Week 1 Sept. 20/2 Enter Super 3G, which is more properly given the long-winded name UMTS Terrestrial Radio Access Node Long Term Evolution (UTRAN LTE) and sometimes is called 3.99G, or Evolved UMTS. 2008 Financial Times 6 Mar. 26 Long Term Evolution could result in the long sought-after convenience of being able to use the same handsets in Europe, the US and Asia. 2015 E. C. Baig & B. LeVitus iPad Mini for Dummies (ed. 3) xv. 268 LTE stands for Long Term Evolution. What it really stands for is speed. long-term memory n. the phase or type of memory responsible for the storage of information for an extended period of time (usually understood as ranging from about 30 seconds to many years); contrasted with short-term memory; abbreviated LTM. ΚΠ 1940 Geography 25 189 Consideration of its loadings suggests that the fourth factor is concerned with immediate memory, rather than long-term memory. 1971 Jrnl. Gen. Psychol. 85 51 The effectiveness of extracting information from long-term memory may depend on short-term load. 2012 Vanity Fair Sept. 325/2 Now 89 years old, she experiences episodic confusion about time and dates, but has a ‘Panavision perfect’ long-term memory, according to her daughter. long-term potentiation n. Physiology long-lasting facilitation of neurotransmission at a synapse following natural or artificial stimulation of the synapse under specific conditions, which is believed to be a cellular mechanism of plasticity in the brain and to be involved especially in learning and memory; abbreviated LTP. ΚΠ 1969 R. Llinás & C. Nicholson in Neurobiol. Cerebellar Evol. & Devel. 460/1 (heading) Long-term potentiation of the parallel fiber-Purkinje cell synapse. 1989 B. Alberts et al. Molecular Biol. Cell (ed. 2) xix. 1100 The underlying rule in the hippocampus seems to be that long-term potentiation occurs on any occasion where a presynaptic cell fires (once or more) at a time when the postsynaptic membrane is strongly depolarized. 2001 Business Week 11 June 96/2 [The company] is developing drugs that will help the brain convert transient short-term memories into stable long-term ones. This process, called long-term potentiation, is compromised in the aging brain and in Alzheimer's victims. This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022). < adj.adv.1867
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