Focloir m

From South Dublin Astronomical Society

Mach number machuimhir f (gs -mhreach)

Magellanic Clouds Scamaill mpl Magellan
Magellanic stream sruth m3 Magellan
magnetic field réimse m4 maighnéadach

magnetic storm stoirm f2 mhaighnéadach
magnetic tail eireaball m1 maighnéadach
magnetic variable réalta f4 athraitheach mhaighnéadach

magnetogram s maighnéadagram m1
magnetohydrodynamics spl maighnéadaihidridinimic f2
magnetometer s maighnéadaiméadar m1

magnetopause s maighnéadstad m4
magnetosheath s maighnéadchumhdach m1
magnetosphere s maighnéadaisféar m1

magnification s formhéadú m (gs -daithe)
magnitude s méid f2

magnitude at opposition méid f2 le linn urchomhaireachta
Maia s (Star) Maia f4
main sequence príomhsheicheamh m1

major axis mór-ais f2
major planets mórphláinéid mpl
Maksutov telescope (= meniscus-mirror system, meniscus telescope) teileascóp m1 Maksutov

Mare Crisium (= Sea of Crisis) Mare m4 Crisium
Mare Fecunditatis (= Sea of Fertility) Mare m4 Fecunditatis
Mare Frigoris (= Sea of Cold) Mare m4 Frigoris

Mare Humorum (= Sea of Humours) Mare m4 Humorum
Mare Imbrium (= Sea of Showers) Mare m4 Imbrium
Mare Nectaris (= Sea of Nectar) Mare m4 Nectaris

Mare Nubium (= Sea of Clouds) Mare m4 Nubium
Mare Serenitatis (= Sea of Serenity) Mare m4 Serenitatis
Mare Tranquillitatis (= Sea of Tranquillity) Mare m4

Tranquillitatis
Mare Vaporum (= Sea of Vapours) Mare m4 Vaporum
maria spl mara fpl
Mariner probe taiscéalaí m4 Mariner

Mariner's Compass, the (= Pyxis) (Const.) Compás m1 an Mhairnéalaigh
Markab s (Star) Markab m4

Mars s (Pl.) Mars m3
mascon s mascan m1
maser s méasar m1

mass s mais f2
mass-energy relation coibhneas m1 maise le fuinneamh
massive a (of density) mórmhaise gs as a

massive a (of size) ollmhór
mass loss caillteanas m1 maise
mass-luminosity relation coibhneas m1 maise le lonrachas

maximum sunspot activity uasghníomhaíocht f3 grianspotaí
mean anomaly meán-aimhrialtacht f3
mean density meándlús m1

mean distance meánfhad m1
mean equinox meánchónocht m3
mean noon meán-nóin f3
mean parallax meán-saobhdhiallas m1

mean position meánsuíomh m1
mean solar day meán-ghrianlá m (gs -lae)
mean solar time meán-ghrianam m3

mean sun meánghrian f2
mean synodical period meántréimhse f4 shionadach
measurement s tomhas m1

median magnitude meánlíne f4 méide
Medusa s Medusa f4
megaparsec s meigeaparsoic m4

Megrez s (Star) Megrez m4
meniscus-mirror system (= Maksutov telescope, meniscus telescope) córas m1 meiniscis
meniscus telescope (= Maksutov telescope, meniscus-mirror system)

teileascóp m1 meiniscis
Mensa s (= the Table) (Const.) Mensa f4
Merak s (Star) Merak m4

Mercury s (Pl.) Mearcair m4
Mercury transits trasdulta mpl Mhearcair
meridian s fadlíne f4 (pl -nte)

meridian angle uillinn f2 fhadlíneach
meridian circle ciorcal m1 fadlíne
meridian error earráid f2 fhadlíneach

meridian instruments ionstraimí fpl fadlíne
meridian of Greenwich fadlíne f4 Greenwich
meridian photometer fótaiméadar m1 fadlíne

meridian transit instrument (= transit instrument) ionstraim f2 thrasdulta fadlíne
Merope s (Star) Merope f4
Messier catalogue catalóg f2 Messier

Messier numbers uimhreacha fpl Messier
Me stars réaltaí fpl Me
metagalactic space spás m1 meiti-réaltrach

metagalaxy s meiti-réaltra m4
metallicity s miotalacht f3
metallic-line stars reáltaí fpl miotal-líneacha

metal-poor a ar bheagán miotail
metal-rich a ar mhórán miotail
meteor s (= falling star, shooting star) dreige f4

meteorite s dreigít f2
meteorite crater cráitéar m1 dreigíte
meteoroid s dreigeoideach m1

meteorology s meitéareolaíocht f3
meteor shower dreigechith m3 (pl -cheathanna)

meteor spectra speictrim mpl dreigí
meteor swarm saithe f4 dreigí
methane s meatán m1

method of least squares modh m3 na n-íoschearnóg
Metonic cycle (= lunar cycle) ciogal m1 Mheatóin
micrometeorite s micridhreigít f2

micrometer s micriméadar m1
micron s miocrón m1
microphotometer s micreafótaiméadar m1

Microscope, the s (= Microscopium) (Const.) an Micreascóp m1
Microscopium s (= the Microscope) (Const.)

Microscopium m4
microwave background radiation radaíocht f3 chúlra mhicreathonnach
Middle European time (= Central European Time, CET) Am m3 Lár na hEorpa, ALE

midnight s meán m1 oíche
midnight sun grian f2 an mheán oíche
Milky Way, the Bealach m1 na Bó Finne, Claí m4 Mór na Réaltaí, an Láir f Bhán

Milky Way System, the (= the Galactic System, the Galaxy) córas m1 Bhealach na Bó Finne
millimicron s millimiocrón m1
Mills cross cros-aeróg f2 Mills

Mimas s (Sat.) Mimas m4
minima spl íosluachanna mpl
minimum luminosity íoslonrachas m1

minor axis mion-ais f2
minor planet (= asteroid, planetoid) mionphláinéad m1
Mintaka s (Star) Mintaka m4

minute of arc nóiméad m1 stua
Mira Ceti (= the Wonderful) (Star) Mira Ceti
Miranda s (Sat.) Miranda f4

Mira star (= long-period variable star) réalta f4 Mira Ceti
Mirfak s (Star) Mirfak m4
missing mass mais f2 ar iarraidh

Mizar s (Star) Mizar m4
MKK system córas m1 MKK
mock sun (= parhelion, sundog) grian f2 bhréige

modulus of distance (= distance modulus) modal m1 faid
Mohammedan calendar féilire m4 Mahamadach
molecular clouds scamaill mpl mhóilíneacha

molecular hydrogen hidrigin f2 mhóilíneach
monistic theory teoiric f2 mhonasaíoch
Monoceros s (= the Unicorn) (Const.) Monoceros m4

monochromatic magnitude méid f2 mhonacrómatach
monochromatic photographs fótagraif mpl mhonacrómatacha
monochromator s monacrómatóir m3

month s mí f (gs míosa, pl míonna)
moon s gealach f2, éasca m4, ré f4

Moon, the s (Sat.) an Ghealach f2
moon crater (= lunar crater) cráitéar m1 gealaí
moon dust deannach m1 gealaí

moon rock carraig f2 ghealaí
moon's limb imeall m1 na gealaí
moons of Jupiter gealacha fpl Iúpatair

moonwalk s siúlóid f2 ghealaí
Morning Star (= Phosphorus) Réalta f4 na Maidine
morphology s moirfeolaíocht f3

motion s gluaisne f4
mounting s gléasadh m (gs -sta)

moving star clusters réaltbhraislí fpl gluaisteacha
M-regions M-réigiúin mpl
M stars M-réaltaí fpl

multiple galaxy ilréaltra m4
multiple star ilréalta f4
multistage rocket roicéad m1 ilchéime

mural quadrant ceathramhán m1 múrach
Musca s (= the Fly) (Const.) Musca f4