Focloir e

From South Dublin Astronomical Society

Eagle, the s (= Aquila) (Const.) an tIolar m1
early a luath, luath-

Earth, the s (Pl.) an Domhan m1
earth resources satellite satailít f2 acmhainní domhanda
Earth's axis ais f2 an Domhain

earthshine s (= ashen light) domhanloinnir f (gs -nnreach)
Easter s an Cháisc f3

east point pointe m4 an oirthir
ebb tide taoide f4 aife, taoide f4 thrá

eccentric anomaly aimhrialtacht f3 éalárnach
eccentric circle ciorcal m1 éalárnach
eccentricity s éalárnacht f3

echo s macalla m4
eclipse s éiclips m4, urú m4
eclipsing binary (= eclipsing variable, photometric binary) déréalta f4

uraitheach
eclipsing variable (= eclipsing binary, photometric binary) réalta f4 athraitheach uraitheach
ecliptic s éiclipteach m1
ecliptic co-ordinate system (= ecliptic system) córas m1

comhordanáidí an éicliptigh
ecliptic system córas m1 an éicliptigh
E-corona s E-choróin f (gs -ónach)

ecosphere s éicisféar m1
edge-on position treo m4 na ciumhaise
effective temperature teocht f3 éifeachtach

effective wavelength tonnfhad m1 éifeachtach
Einstein effects iarmhairtí fpl Einstein
Einstein's theory of relativity teoiric f2 choibhneasachta Einstein

eject v (of space capsule) eisteilg (vn -ean, pp -the)
ejecta spl eisteilgeáin mpl

Elara s (Sat.) Elara f4
E-layer s (= Kennelly-Heaviside layer) E-chiseal m1

Electra s (Star) Electra f4
electromagnetic radiation radaíocht f3 leictreamaighnéadach
electromagnetic spectrum (= radiation spectrum) speictream m1

leictreamaighnéadach
electron s leictreon m1
electron density dlús m1 (na) leictreon
electronic telescope teileascóp m1 leictreonach

electron-multiplier tube feadán m1 leictreoniolraitheora
electron stream leictreonsruth m3
electron volt leictreonvolta m4

element s (chemistry) dúil f2
elements of orbit eilimintí fpl na fithise
ellipse s éilips m4

ellipsoidal theory teoiric f2 éileapsóideach
elliptical galaxy réaltra m4 éilipseach
elongated a (of orbit) fadaithe

elongation s fadú m (gs -daithe)
emersion s nochtadh m (gs nochta)

emission s astú m (gs -taithe), astúchán m1
emission lines línte fpl astúcháin

emission nebula réaltnéal m1 astúcháin
emission spectrum speictream m1 astúcháin
emitter s astaíre m4

emulsion s eibleacht f3
Enceladus s (Sat.) Enceladus m4
Encke's comet cóiméad m1 Encke

Encke's division bearna f4 Encke
energy production táirgeadh m1 fuinnimh
English mounting gléasadh m Sasanach

epact s éapacht f3
ephemeris s eifimiris f2
epicycle s eipiciogal m1

epicycle theory teoiric f2 an eipiciogail
epoch s aga m4
Epsilon Aurigae (Star) Epsilon Aurigae

Epsilon Lyrae (Star) Epsilon Lyrae
equal altitudes airdí fpl comhionanna
equal components comhbhaill mpl chothroma

equal double (star) réalta f4 dhúbailte chothrom
equation of light cothromóid f2 an tsolais
equation of the centre cothromóid f2 an lárphointe

equation of time cothromóid f2 ama
equator s meánchiorcal m1
equatorial co-ordinate system (= equator{ial} system) córas m1

comhordanáidí an mheánchiorcail
equatorial diameter trastomhas m1 an mheánchiorcail
equatorial horizontal parallax saobhdhiallas m1 cothrománach meánchriosach
equatorial mounting gléasadh m meánchriosach

equator system córas m1 an mheánchiorcail
equinoctial colure colúr m1 cónochta
equinox s cónocht m3 (gpl cónocht)

equivalent width leithead m1 coibhéiseach
Equuleus s (= the Little Horse) (Const.) Equuleus m4

era s ré f4
Eridanus s (= the River) (Const.) Eridanus m4

Eros s (Ast.) Eros m4
error s earráid f2
erupting star (= exploding star) réalta f4 bhrúchtach

eruption s brúchtadh m (gs -chta)
eruptive prominence starraiceacht f3 bhrúchtach

escape velocity (= velocity of escape) treoluas m1 éalaithe
eucrite s eoicrít f2
Europa s (Sat.) Europa f4

evection s eisiompar m1
evening s tráthnóna m4
Evening Star (= Hesperus) Réalta f4 an Tráthnóna

event horizon léaslíne f4 theagmhais
evolution s éabhlóid f2
evolutionary track líne f4 éabhlóide

evolutionary theory teoiric f2 na héabhlóide
excess s barraíocht f3
exobiology s (= astrobiology) eisibhitheolaíocht f3

exosphere s eisisféar m1
expanding gaseous envelopes imchlúdaigh mpl ghásacha fhairsingíocha
expanding universe cruinne f4 fhairsingíoch

expansion of the universe fairsingiú m na cruinne
expansion velocity treoluas m1 fairsingithe
exploding star (= erupting star) réalta f4 phléascach

Explorer I (Sat.) Taiscéalaí m4 I
explosion s pléascadh m (gs -ctha)

explosion centre lár m1 an phléasctha
exposure s (of photographic film, etc.) nochtadh m (gs

-ta)
external galaxies réaltraí mpl amuigh
external systems córais mpl amuigh
extinction s díobhadh m (gs -ofa)

extragalactic nebula (= galaxy) réaltnéal m1 eachtar-réaltrach
extraterrestrial a eachtardhomhanda
eyepiece s (= ocular) súilphíosa m4