etan.¹

/ˈiːtə/

/ˈeɪtə/

Etymology: < Greek ἦτα (see etacism n.).

The name of the seventh letter (Η, η) of the Greek alphabet, corresponding to English e.

ΘΚΠ

society > communication > writing > written character > name of written character > [noun] > Greek

alphac1175

muc1175

betaa1400

taua1400

chic1400

deltac1400

etac1400

kappac1400

gamma?a1425

lambda?a1425

nu?a1425

phi?a1425

pi?a1425

psi?a1425

rho?a1425

xi?a1425

zeta?a1425

upsilon1559

san1584

omega1599

theta1603

iota1607

sigma1607

omicron1631

digamma1699

epsilon1842

zeta1850

c1400 in J. Mandeville Trav. (1839) iii. 20.

1642 J. Howell Instr. Forreine Travell xi. 149 In some places of the Morea..they confound these three letters, η, ι, υ (Eta, Iota, Upsilon).

1883 I. Taylor Alphabet II. vii. 85 The Latin H and the Greek eta are identical in form and in alphabetic position, though not in value.

Draft additions 1993

2. Particle Physics. Frequently written η. Any of a group of mesons with zero spin and isospin.

ΘΚΠ

the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > meson > [noun] > type of

tau1949

photomeson1950

theta1954

eta1961

omega meson1961

rho1961

phi meson1962

bottomonium1976

quarkonium1977

upsilon1977

1961 A. Pevsner et al. in Physical Rev. Lett. 7 421/2 Another large peak in the 3-pion mass plot..is seen near 550 Mev, which strongly suggests the existence of a second 3-pion resonance (or particle). We shall hereafter refer to this particle as η.

1963 World Bk. Year Bk. 416/2 Before the pi mesons formed, an unstable particle with a mass 1,000 times that of an electron appeared. It was called the eta meson.

1966 New Statesman 8 July 51/1 The team had studied..the eta-meson. It has a very short life and decomposes into other particles, called pi-mesons.

1972 G. L. Wick Elem. Particles v. 86 The omega conforms to the norms of a strongly interacting particle and decays in about 10⁻²³ seconds. The eta, however, is a narrower resonance and takes as long as 10⁻¹⁸ seconds to decay.

1982 Sci. Amer. Nov. 135/1 The particle decays to yield two eta mesons, which then decay to yield four photons.

1987 McGraw-Hill Encycl. Sci. & Technol. (ed. 6) X. 628 An eta meson with structure (cc̄) is now known, η_c (2981), whose decay modes include ηππ, 2π⁺2π⁻, and K⁺K⁻π⁺π⁻.

This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2019).

etan.²

/ˈiːtə/

Origin: A borrowing from Arawak. Etymon: Arawak ite.

Etymology: < Arawak ite. Compare later ita n.

In full, eta palm. = ita palm at ita n.

ΘΚΠ

the world > plants > particular plants > trees and shrubs > non-British trees or shrubs > palm trees > [noun] > palmetto trees or fan-palms

palmite1555

palmetto1582

palmetto tree1582

talipot1681

tamarind-palmetto1698

Chamaerops1766

eta palm1769

cabbage palm tree1773

palmetto bush1784

swamp-cabbage1792

cabbage tree1796

saw palmetto1797

latania1799

hat palm1812

gebang1817

coco de mer?1820

itaa1832

cabbage palm1847

miriti1853

latania1856

moriche1860

broom-palm1866

ilala1868

licuala1872

fan-plant1884

tiger-grass1884

buri1890

latanier1929

Washingtonia1945

the world > plants > particular plants > cultivated or valued plants > particular food plant or plant product > yielding intoxicating drink > [noun] > palm-wine plants

toddy tree1630

sagwire1681

wine-palm1681

pardon-tree1705

tomboa1712

eta palm1769

nipa1779

toddy palm1810

itaa1832

jaggery palm1859

ki1860

bamboo palm1866

1769 E. Bancroft Ess. Nat. Hist. Guiana 61 The Eta Tree is of the same species with the foregoing [sc. cabbage tree], but smaller.

1866 G. W. Bennett Illustr. Hist. Brit. Guiana 228 The Eta Palm (Mauritia flexuosa) is a beautiful tree and is adored by the Indians for the numerous uses to which it can be applied.

1922 Blackwood's Mag. July 6/1 The road used to end..before a great eta-palm swamp.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2022).

etan.³

/ˈeɪtə/

Forms: Also Eta.

Etymology: Japanese.

A member of a class of Japanese outcasts. Also collective and attributive.

ΘΚΠ

society > society and the community > social relations > lack of social communication or relations > exclusion from society > [noun] > rendering outcast > outcast

outcastc1390

outwalea1400

abjection1447

abject1528

overcast1574

rejectament1681

castaway1799

pariah1818

leper1825

cagot1844

Ishmaelite1848

hinin1884

expellee1888

eta1897

Ishmael1899

reject1917

1897 A. M. Knapp Feudal & Mod. Japan I. v. 173 The cause of the intense repulsion and contempt with which the Japanese have regarded the eta class is unknown.

1897 A. M. Knapp Feudal & Mod. Japan I. v. 173 No pariah class of any nation has ever been under a greater ban of disdain and contempt than have the eta of Japan.

1897 A. M. Knapp Feudal & Mod. Japan I. v. 174 The spot where an eta has been standing must be sprinkled with salt if a Japanese would tread there without contamination.

1906 Westm. Gaz. 28 July 12/2 Hoshiko, eta though she be, full of the supreme devotion.

1955 Times 14 July 11/4 He visited the Ainu,..the Etas (those mysterious out~castes), and strip-tease shows.

1958 Times 9 Sept. 9/7 The pitiable existence of many people of eta origin..has hampered their emancipation.

1960 A. Koestler Lotus & Robot ii. vi. 176 The eta—the sweepers, scavengers and tanners—ceased to be untouchables.

1969 Daily Tel. 6 Mar. 16/5 The continuation of a practice in Japan..which permits 3,000,000 people known as ‘eta’ or ‘the untouchables’ to live in 6,000 outcast hamlets isolated from the people by centuries-old discrimination.

This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2021).

> as lemmas

ETA

ETA n. edited to add, with reference to a post on an online discussion group, blog, etc., which has been modified.

2002 Fametracker Forums Rev. & Analyze 2002 VMAs in alt.tv.mtv (Usenet newsgroup) 31 Aug. I'm really not digging Bruce Springsteen's song... ETA: Jimmy Fallon is totally rocking the intro.

2012 S. Gardner & S. Birley Blogging for Dummies (ed. 4) ii. 40 Some bloggers preface the new content with the acronym ETA.

2017 www.mumsnet.com 11 Apr. (forum post, accessed 19 May 2017) ETA, MIL is actually lovely and has a good relationship with all her sons.

extracted from En.¹

ETA

ETA n. estimated time of arrival; cf. ETD n.

1939 Flight 26 Oct. 335/1 A quickly estimated E.T.A., too, will narrow down the area of search if the next outstanding landmark fails to turn up.

1958 ‘N. Shute’ Rainbow & Rose vi. 231 E.T.A. is seven-fifteen.

2011 Z. Strachan Ever fallen in Love 206 He texted Stephie with his ETA.

extracted from En.¹

ETA

ETA n.

Brit.

/ˈɛtə/

U.S.

/ˈɛdə/

[ < Basque ETA, initialism < the initial letters of Euzkadi ta Azkatasuna, lit. ‘Basque Country and liberty’] a Basque separatist movement in Spain and France, founded in 1959.

ΘΚΠ

society > authority > rule or government > politics > Spanish politics > [noun] > political associations or societies

Black Hand1883

ETA1963

1963 Times 12 Jan. 6/5 All are said to be members of a movement known as E.T.A., which stands for Euzkadi ta Azkatasuna (Basque country and liberty).

1969 Economist 3 May 36/2 The police arrested Canon Ubieta..on suspicion of having helped an ETA fugitive.

2004 New Yorker 2 Aug. 42/1 Police had learned that the explosive used in the bombings was Goma-2, which ETA no longer used.

extracted from En.¹

n.¹c1400

n.²1769

n.³1897

as lemmas

单词	eta
释义	etan.¹ /ˈiːtə//ˈeɪtə/ Etymology: < Greek ἦτα (see etacism n.). The name of the seventh letter (Η, η) of the Greek alphabet, corresponding to English e. ΘΚΠ society > communication > writing > written character > name of written character > [noun] > Greek alphac1175 muc1175 betaa1400 taua1400 chic1400 deltac1400 etac1400 kappac1400 gamma?a1425 lambda?a1425 nu?a1425 phi?a1425 pi?a1425 psi?a1425 rho?a1425 xi?a1425 zeta?a1425 upsilon1559 san1584 omega1599 theta1603 iota1607 sigma1607 omicron1631 digamma1699 epsilon1842 zeta1850 c1400 in J. Mandeville Trav. (1839) iii. 20. 1642 J. Howell Instr. Forreine Travell xi. 149 In some places of the Morea..they confound these three letters, η, ι, υ (Eta, Iota, Upsilon). 1883 I. Taylor Alphabet II. vii. 85 The Latin H and the Greek eta are identical in form and in alphabetic position, though not in value. Draft additions 1993 2. Particle Physics. Frequently written η. Any of a group of mesons with zero spin and isospin. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > meson > [noun] > type of tau1949 photomeson1950 theta1954 eta1961 omega meson1961 rho1961 phi meson1962 bottomonium1976 quarkonium1977 upsilon1977 1961 A. Pevsner et al. in Physical Rev. Lett. 7 421/2 Another large peak in the 3-pion mass plot..is seen near 550 Mev, which strongly suggests the existence of a second 3-pion resonance (or particle). We shall hereafter refer to this particle as η. 1963 World Bk. Year Bk. 416/2 Before the pi mesons formed, an unstable particle with a mass 1,000 times that of an electron appeared. It was called the eta meson. 1966 New Statesman 8 July 51/1 The team had studied..the eta-meson. It has a very short life and decomposes into other particles, called pi-mesons. 1972 G. L. Wick Elem. Particles v. 86 The omega conforms to the norms of a strongly interacting particle and decays in about 10⁻²³ seconds. The eta, however, is a narrower resonance and takes as long as 10⁻¹⁸ seconds to decay. 1982 Sci. Amer. Nov. 135/1 The particle decays to yield two eta mesons, which then decay to yield four photons. 1987 McGraw-Hill Encycl. Sci. & Technol. (ed. 6) X. 628 An eta meson with structure (cc̄) is now known, η_c (2981), whose decay modes include ηππ, 2π⁺2π⁻, and K⁺K⁻π⁺π⁻. This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2019). etan.² /ˈiːtə/ Origin: A borrowing from Arawak. Etymon: Arawak ite. Etymology: < Arawak ite. Compare later ita n. In full, eta palm. = ita palm at ita n. ΘΚΠ the world > plants > particular plants > trees and shrubs > non-British trees or shrubs > palm trees > [noun] > palmetto trees or fan-palms palmite1555 palmetto1582 palmetto tree1582 talipot1681 tamarind-palmetto1698 Chamaerops1766 eta palm1769 cabbage palm tree1773 palmetto bush1784 swamp-cabbage1792 cabbage tree1796 saw palmetto1797 latania1799 hat palm1812 gebang1817 coco de mer?1820 itaa1832 cabbage palm1847 miriti1853 latania1856 moriche1860 broom-palm1866 ilala1868 licuala1872 fan-plant1884 tiger-grass1884 buri1890 latanier1929 Washingtonia1945 the world > plants > particular plants > cultivated or valued plants > particular food plant or plant product > yielding intoxicating drink > [noun] > palm-wine plants toddy tree1630 sagwire1681 wine-palm1681 pardon-tree1705 tomboa1712 eta palm1769 nipa1779 toddy palm1810 itaa1832 jaggery palm1859 ki1860 bamboo palm1866 1769 E. Bancroft Ess. Nat. Hist. Guiana 61 The Eta Tree is of the same species with the foregoing [sc. cabbage tree], but smaller. 1866 G. W. Bennett Illustr. Hist. Brit. Guiana 228 The Eta Palm (Mauritia flexuosa) is a beautiful tree and is adored by the Indians for the numerous uses to which it can be applied. 1922 Blackwood's Mag. July 6/1 The road used to end..before a great eta-palm swamp. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2022). etan.³ /ˈeɪtə/ Forms: Also Eta. Etymology: Japanese. A member of a class of Japanese outcasts. Also collective and attributive. ΘΚΠ society > society and the community > social relations > lack of social communication or relations > exclusion from society > [noun] > rendering outcast > outcast outcastc1390 outwalea1400 abjection1447 abject1528 overcast1574 rejectament1681 castaway1799 pariah1818 leper1825 cagot1844 Ishmaelite1848 hinin1884 expellee1888 eta1897 Ishmael1899 reject1917 1897 A. M. Knapp Feudal & Mod. Japan I. v. 173 The cause of the intense repulsion and contempt with which the Japanese have regarded the eta class is unknown. 1897 A. M. Knapp Feudal & Mod. Japan I. v. 173 No pariah class of any nation has ever been under a greater ban of disdain and contempt than have the eta of Japan. 1897 A. M. Knapp Feudal & Mod. Japan I. v. 174 The spot where an eta has been standing must be sprinkled with salt if a Japanese would tread there without contamination. 1906 Westm. Gaz. 28 July 12/2 Hoshiko, eta though she be, full of the supreme devotion. 1955 Times 14 July 11/4 He visited the Ainu,..the Etas (those mysterious out~castes), and strip-tease shows. 1958 Times 9 Sept. 9/7 The pitiable existence of many people of eta origin..has hampered their emancipation. 1960 A. Koestler Lotus & Robot ii. vi. 176 The eta—the sweepers, scavengers and tanners—ceased to be untouchables. 1969 Daily Tel. 6 Mar. 16/5 The continuation of a practice in Japan..which permits 3,000,000 people known as ‘eta’ or ‘the untouchables’ to live in 6,000 outcast hamlets isolated from the people by centuries-old discrimination. This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2021). > as lemmas ETA ETA n. edited to add, with reference to a post on an online discussion group, blog, etc., which has been modified. Π 2002 Fametracker Forums Rev. & Analyze 2002 VMAs in alt.tv.mtv (Usenet newsgroup) 31 Aug. I'm really not digging Bruce Springsteen's song... ETA: Jimmy Fallon is totally rocking the intro. 2012 S. Gardner & S. Birley Blogging for Dummies (ed. 4) ii. 40 Some bloggers preface the new content with the acronym ETA. 2017 www.mumsnet.com 11 Apr. (forum post, accessed 19 May 2017) ETA, MIL is actually lovely and has a good relationship with all her sons. extracted from En.¹ ETA ETA n. estimated time of arrival; cf. ETD n. Π 1939 Flight 26 Oct. 335/1 A quickly estimated E.T.A., too, will narrow down the area of search if the next outstanding landmark fails to turn up. 1958 ‘N. Shute’ Rainbow & Rose vi. 231 E.T.A. is seven-fifteen. 2011 Z. Strachan Ever fallen in Love 206 He texted Stephie with his ETA. extracted from En.¹ ETA ETA n. Brit. /ˈɛtə/ , U.S. /ˈɛdə/ [ < Basque ETA, initialism < the initial letters of Euzkadi ta Azkatasuna, lit. ‘Basque Country and liberty’] a Basque separatist movement in Spain and France, founded in 1959. ΘΚΠ society > authority > rule or government > politics > Spanish politics > [noun] > political associations or societies Black Hand1883 ETA1963 1963 Times 12 Jan. 6/5 All are said to be members of a movement known as E.T.A., which stands for Euzkadi ta Azkatasuna (Basque country and liberty). 1969 Economist 3 May 36/2 The police arrested Canon Ubieta..on suspicion of having helped an ETA fugitive. 2004 New Yorker 2 Aug. 42/1 Police had learned that the explosive used in the bombings was Goma-2, which ETA no longer used. extracted from En.¹ < n.¹c1400n.²1769n.³1897 as lemmas
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etan.1

Draft additions 1993

etan.2

etan.3

> as lemmas

etan.¹

etan.²

etan.³