Focloir a

From South Dublin Astronomical Society

Abell Catalogue Catalóg f2 Abell
aberration s iomrall m1
aberrational ellipse éilips m4 iomrallach

aberration of lenses iomrall m1 lionsaí
aberration of starlight iomrall m1 réaltsolais
ablation s eisídiú m (gs -ithe)

absolute luminosity dearbhlonrachas m1
absolute magnitude dearbhmhéid f2
absolute temperature dearbhtheocht f3
absolute zero dearbhnialas m1

absorption s ionsú m4, ionsúchán m1
absorption coefficient comhéifeacht f3 ionsúcháin
absorption lines línte fpl ionsúcháin

absorption nebula réaltnéal m1 ionsúcháin
absorption spectrum speictream m1 ionsúcháin
abundance s líonmhaireacht f3

Acamar s (Star) Acamar m4
acceleration s luasghéarú m (gs -raithe)

acceleration due to gravity (= acceleration of gravity) luasghéarú m de bharr domhantarraingthe
acceleration of gravity (= acceleration due to gravity) luasghéarú m na domhantarraingthe
accretion s fuilleamh m1

Achernar s (Star) Achernar m4
Achilles s (Ast.) Aichill m4

achondrite s acoindrít f2
achromatic objective réadlionsa m4 neamhchrómatach
acronychal a acróiniciúil

Acrux s (Star) Acrux f4
actinometer s achtanaiméadar m1
active areas limistéir mpl ghníomhacha

active sun grian f2 ghníomhach
actual motion gluaisne f4 iarbhír
Adhara s (Star) Adhara m4

adiabatic change athrú m adiabatach
Adonis s (Ast.) Adonis m4
advance of the perihelion of Mercury tulghluaisne f4pheirihéilean Mhearcair
aeon s aeón m1
aerial s (= antenna) aeróg f2

aerolite s aerailít f2
aeronomy s aeranomaíocht f3
aeropause s aerastad m4

aerospace s aeraspás m1
age determination cinneadh m1 aoise
age of the Galaxy aois f2 an Réaltra

age of the universe aois f2 na cruinne
air friction frithchuimilt f2 an aeir
airglow s aerloinnir f (gs -nnreach)

Air Pump, the s (= Antlia) (Const.) an tAerchaidéal m1
air resistance friotaíocht f3 aeir

Airy disc diosca m4 Airy
albedo s ailbéideacht f3
Albireo s (Star) Albireo m4

Alcor s (Star) Alcor m4
Alcyone s (Star) Alcyone f4

Aldebaran s (Star) Aldebaran m4
Alderamin s (Star) Alderamin m4

Alfvén's cosmogony cosmagnaíocht f3 Alfvén
Alfvén waves tonnta fpl Alfvén
Algenib s (Star) Algenib m4

Algieba s (Star) Algieba m4
Algol s (= the Demon Star, the Winking Demon) (Star)Algol m4
Algol-type variable réalta f4 athraitheach de chineál Algol
alidade s (= index arm) aladáid f2

Alioth s (Star) Alioth m4
Alkaid s (Star) Alkaid m4

Almach s (Star) Almach m4
Almagest s an tAlmagest m4
almanac s almanag m1

almucantar s (= parallel of altitude) almacantar m1
Alnair s (Star) Alnair m4

Alpha Centauri (Star) Alpha Centauri
Alphard s (Star) Alphard m4
Alphekka s (= Gemma, the Gem) (Star) Alphekka m4

Alpheratz s (Star) Alpheratz m4
Alphonsus s (Crat.) Alphonsus m4

Alps spl (on Moon) na hAlpa mpl
Altair s (Star) Altair m4

Altar, the s (= Ara) (Const.) an Altóir f3
altazimuth s altasamat m1

altazimuth instrument ionstraim f2 altasamait
altazimuth mounting gléasadh m altasamait
altazimuth system (= horizontal co-ordinate system) córas m1altasamait
altitude s airde f4
altitude of the pole airde f4 an phoil
aluminizing s alúmanú m (gs -naithe)

Amalthea s (Star) Amalthea f4
ammonia clock clog m1 amóinia
ammonia crystals criostail mpl amóinia

Amor s (Ast.) Amor m4
amplitude s aimplitiúid f2
Andromeda s (Const.) Andraiméide f4

Andromeda galaxy (= Andromeda nebula, Andromeda spiral) réaltra m4 Andraiméide
Andromeda nebula (= Andromeda galaxy, Andromeda spiral) réaltnéal m1 Andraiméide
Andromeda spiral (= Andromeda galaxy, Andromeda nebula) bís f2Andraiméide
Andromedids spl (= Bielids) (Met.Sh.) Andraiméididí fpl
angle s uillinn f2 (pl -eacha)

angle of refraction uillinn f2 athraonta
angstrom s (= Angstrom unit) angstram m1
Angstrom unit (= angstrom) aonad m1 Angstrom

angular diameter trastomhas m1 uilleach
angular distance fad m1 uilleach
annihilation s díothú m (gs -thaithe), díothúchán m1

annual aberration iomrall m1 bliantúil
annual equation cothromóid f2 bhliantúil
annual parallax saobhdhiallas m1 bliantúil

annual variation comhathrú m bliantúil
annular eclipse éiclips m4 fáinneach, urú m4 fáinneach

anomalistic month mí f3 aimhrialta
anomalistic year bliain f3 aimhrialta
anomaly s aimhrialtacht f3

ansae spl ansaí mpl
antapex s frithrinn f2
Antarctic, the s an tAntartach m1

Antares s (Star) Antares m4
antenna s (= aerial) aeróg f2

anthropic principle prionsabal m1 na hantrapachta
antimatter s frithdhamhna m4
Antlia s (= the Air Pump) (Const.) Antlia f4
apastron s apastrón m1
aperture s cró m4 (pl -ite)

aperture synthesis sintéis f2 chróite
apex s (= vertex) rinn f2
aphelion s apaihéilean m1

apocentre s (= apofocus) apalár m1
apofocus s (= apocentre) apafócas m1

apogalacticon s apairéaltracan m1
apogee s apaigí m4
Apollo s (Ast.) Apalló m4

apparent diameter trastomhas m1 dealraitheach
apparent distance fad m1 dealraitheach
apparent libration guagadh m dealraitheach

apparent luminosity lonrachas m1 dealraitheach
apparent magnitude méid f2 dhealraitheach
apparent motion gluaisne f4 dhealraitheach

apparent noon nóin f3 dhealraitheach
apparent photographic magnitude méid f2 fhótagrafach dhealraitheach
apparent position suíomh m1 dealraitheach

apparent solar time grian-am m3 dealraitheach
apparent visual magnitude amharcmhéid f2 dhealraitheach
apparition s taispeánadh m (gs -nta)

Appleton layers cisil mpl Appleton
apse s (= apsis) aipsis f2
apsis s (= apse) aipsis f2

Apus s (= Bird of Paradise) (Const.) Apus m4
Aquarids spl (Met.Sh.) Acuairidí fpl

Aquarius s (= the Water-bearer) (Const.) Aquarius m4
Aquila s (= the Eagle) (Const.) Aquila f4

Ara s (= the Altar) (Const.) Ara f4
arc s stua m4

Archer, the s (= Sagittarius) (Const.) an Saighdeoir m3
Arctic, the s an tArtach m1

Arcturus s (Star) Arcturus m4
Arend-Roland comet cóiméad m1 Arend-Roland
Argo s (= Argo Navis, the Ship) (Const.) Argo f4

Argo Navis (= Argo, the Ship) (Const.) Argo Navis
argument of the perihelion argóint f3 an pheirihéilin
Ariel s (Sat.) Ariel m4

Aries s (= the Ram) (Const.) Aries m4
Aristarchus s (Crat.) Aristarchus m4

Arizona meteorite crater (= Barringer crater, Coon Butte crater) cráitéar m1 dreigíte Arizona
Armagh Observatory Réadlann f2 Ard Mhacha
armillary sphere sféar m1 bráisléadach

array s eagar m1
Arrow, the s (= Sagitta) (Const.) an tSaighead f2

artificial horizon léaslíne f4 shaorga
artificial satellite satailít f2 shaorga
ascending node nód m1 éiritheach

ashen light (= earthshine) liathsholas m1
aspect s (of appearance) gné f4 (pl -ithe)
aspect s (of direction) treoíocht f3
astable multivibrator ilchreathadóir m3 neamhchobhsaí
A stars spl A-réaltaí fpl

asterism s astaireacht f3
asteroid s (= minor planet, planetoid) astaróideach m1
asteroid(al) a astaróideach

astigmatism s aistiogmatacht f3
astrobiology s (= exobiology) réalt-bhitheolaíocht f3
astrobleme s astraibléim f2

astrograph s réaltghraf m1
Astrographic Catalogue (= Carte du Ciel) Catalóg f2 Réaltghrafach
astrolabe s astraláib f2

astrology s astralaíocht f3
astrometric binary déréalta f4 réaltmhéadrach
astrometry s réaltmhéadracht f3

astronaut s (= cosmonaut) spásaire m4
astronautics spl spásaireacht f3
astronomical clock clog m1 réalteolaíoch

astronomical constant tairiseach m1 réalteolaíoch
astronomical co-ordinates comhordanáidí fpl réalteolaíocha
astronomical instruments ionstraimí fpl réalteolaíocha

astronomical observatory réadlann f2 réalteolaíoch
astronomical society cumann m1 réalteolaíochta
astronomical telescope teileascóp m1 réalteolaíochta

astronomical triangle triantán m1 réalteolaíoch
astronomical tube feadán m1 réalteolaíoch
astronomical twilight breacsholas m1 réalteolaíoch

astronomical unit (AU) aonad m1 réalteolaíoch, AR
astronomical units of distance aonaid mpl faid réalteolaíocha
astronomical year bliain f3 réalteolaíoch

astronomical zenith forar m1 réalteolaíoch
astronomic station stáisiún m1 réalteolaíochta
astronomy s réalteolaíocht f3

astrophotography s (= stellar photography) réaltfhótagrafaíocht f3
astrophotometry s (= stellar photometry) réaltfhótaiméadracht f3

astrophysics spl réaltfhisic f2
asymmetrical star streams réaltsruthanna mpl neamhshiméadracha
ataxite s ataicsít f2

Atlas s (Star) Atlas m1
atmosphere s atmaisféar m1
atmospheric extinction díobhadh m atmaisféarach

atmospheric pollution truailliú m atmaisféarach
atmospheric refraction athraonadh m atmaisféarach
atmospheric unsteadiness neamhfhoistine f4 atmaisféarach

atmospheric window fuinneog f2 atmaisféarach
atom s adamh m1
atomic clock clog m1 adamhach
atomic weight meáchan m1 adamhach
A.U. (astronomical unit) A.R., aonad m1 réalteolaíoch
Auriga s (= the Charioteer) (Const.) Auriga m4
aurora australis (= southern lights) aurora australis
aurora borealis (= northern lights) aurora borealis
aurorae s gealáin mpl
autumn s fómhar m1
autumn equinox (= First Point of Libra) cónocht m3 an fhómhair
axis s ais f2 (pl -eanna)
azimuth s asamat m1
azimuthal mounting gléasadh m asamatach
azimuth error earráid f2 asamait