An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 12937 Search : far
geodetic zenith
  سرسوی ِ زمین‌سنجیک   
sarsu-ye zamin-sanjik

Fr.: zénith géodésique   

The intersection of the prolongation of the outward → normal to the → reference ellipsoid at the point in question with the → celestial sphere.

geodetic; → zenith.

geographic
  زمین‌نگاریک   
zaminnegârik

Fr.: géographique   

Of or pertaining to → geography.

geography; → -ic.

geographic coordinate system
  راژمان ِ هماراهای ِ زمین‌نگاریک   
râžmân-e hamârâhâ-ye zaminnegârik

Fr.: système de coordonnées géographiques   

A → ccordinate system on the surface of the Earth that defines every location by a set of numbers and letters, indicating the → latitude and → longitude.

geographic; → coordinate; → system.

geographic latitude
  ورونای ِ زمین‌نگاریک   
varunâ-ye zaminnegârik

Fr.: latitude géographique   

A synonym for → geodetic latitude or → astronomical latitude.

geographic; → latitude.

geographic north pole
  قطب ِ هودر ِ زمین‌نگاریک   
qotb-e hudar-e zaminnegârik

Fr.: pôle nord géographique   

north pole.

geographic; → north; → pole.

geographic south pole
  قطب ِ دشتر ِ زمین‌نگاریک   
qotb-e daštar-e zaminnegârik

Fr.: pôle sud géographique   

south pole.

geographic; → south; → pole.

geography
  زمین‌نگاری   
zaminnegâri (#)

Fr.: géographie   

The science dealing with the areal differentiation of the Earth's surface, as shown in the character, arrangement, and interrelations over the world of such elements as climate, elevation, soil, vegetation, population, land use, industries, or states, and of the unit areas formed by the complex of these individual elements (Dictionary.com).

geo-; → -graphy.

geoid
  زمین‌وار   
zaminvâr (#)

Fr.: géoïde   

The form of the → Earth obtained by taking average sea level surface and extending it across the continents. In other words, the → equipotential surface ("mean sea level") of the Earth's → gravitational field. The geoid is considered to represent the true physical figure of the Earth, in contrast to the → reference ellipsoid, which is idealized geometrical figure of the Earth.

geo-; → -oid.

geologic
  زمین‌شناختی   
zaminšenâxti (#)

Fr.: géologique   

Of, pertaining to, or based on → geology. Also geological.

From geolog(y), → geology, + → -ic.

geologic time
  زمان ِ زمین‌شناختی   
zamân-e zaminšenâxti (#)

Fr.: temps géologique   

The long span of time from the end of the formation of Earth during which our planet underwent its major transformations.

geologic; → time.

geology
  زمین‌شناسی   
zaminšenâsi (#)

Fr.: géologie   

The scientific study of the composition, structure, and physical history of the Earth.

geo- + → -logy.

geomagnetic
  زمین‌مغناتیسی، زمین‌مغناتی   
zamin-meqnâtisi, zamin-meqnâti

Fr.: géomagnétique   

Of or pertaining to → geomagnetism.

geo-; → magnetic.

geomagnetic activity
  ژیرندگی ِ زمین‌مغناتیسی، ~ زمین‌مغناتی   
žirandegi-ye zamin-meqnâtisi, ~ zamin-meqnâti

Fr.: activité géomagnétique   

The natural variations in the → geomagnetic field due to interactions of the Earth's field and → magnetosphere with energetic particles from the Sun.

geomagnetic; → activity.

geomagnetic excursion
  زچار ِ زمین‌مغناتی   
zocâr-e zamin-meqnâti

Fr.: excursion géomagnétique   

A geophysical event, distinguished from the → magnetic reversal, in which the Earth's magnetic field departs for a relatively short time from its usual near axial configuration, without establishing a reversed direction. During the excursion the intensity and direction of the Earth's magnetic field undergo drastic changes. Palaeomagnetic measurements have revealed that since the last full reversal the Earth's magnetic field has, for brief intervals, deviated from the behavior expected during "normal" secular variation.

geomagnetic; → excursion.

geomagnetic field
  میدان ِ زمین‌مغناتیسی، ~ زمین‌مغناتی   
meydân-e zamin-meqnâtisi, ~ zamin-meqnâti

Fr.: champ géomagnétique   

The magnetic field that is generated within the Earth and extends out around the Earth. The intensity of the magnetic field at the Earth's surface is about 0.32 → gauss at the equator and 0.62 gauss at the north pole.

geomagnetic; → field.

geomagnetic storm
  توفان ِ زمین‌مغناتیسی، ~ زمین‌مغناتی   
tufân-e zamin-meqnâtisi, ~ zamin-meqnâti

Fr.: orage géomagnétique   

A violent disturbance of the Earth's magnetic field, distinct from regular diurnal variations, following a → solar flare or → coronal mass ejection.

geomagnetic; → storm.

geomagnetism
  زمین‌مغنات‌مندی   
zamin-meqnâtmandi

Fr.: géomagnetsme   

A branch of geophysics concerned with the study of the Earth's → geomagnetic field, including its origin, spatial extent, and variations in time.

geo-; → magnetism.

geometric
  هندسی   
hendesi (#)

Fr.: géométrique   

Of or pertaining to geometry or to the principles of geometry.

Adj. of → geometry

geometric albedo
  سپیدای ِ هندسی   
sepidâ-ye hendesi

Fr.: albedo géométrique   

A measure of the → reflectivity of a surface, especially of the solar system bodies (planets, satellites or asteroids). It is the ratio of a body's brightness at zero → phase angle to the brightness of a perfectly diffusing disk with the same position and apparent size as the body. Geometric albedo depends on the radiation wavelength. The bolometric geometric albedo refers to reflectivity in all wavelengths. Compare with the → Bond albedo.

geometric; → albedo.

geometric delay
  درنگ ِ هندسی   
derang-e hendesi

Fr.: retard géométrique   

One of the two factors contributing to → gravitational lensing time delay that arises from the fact that the bent trajectory is longer than the straight one. The other factor is due to the → Shapiro time delay.

geometric; → delay.

<< < -es -iv -ti 217 A s abe abs abs acc acc Ach act act ADa adi adv aff age Alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg arm art ass ast ast ast atm ato att aur aut axi B-t Bai Bal bar bar Be bed Bes BHB bif bim bin Bio bis bla ble blu bod Bol bor bou bra Bre bro Bul cag cal can Can car Car Cas cat CCD cel cen Cet cha cha che che chr cir cir cit cla clo clo clu Coa coe coh col Col col com com com com com com com com com con con con con con con con con con con con coo cor cor cor cos cos cos cou cou cra cri cro cry cul cur cyc D r dar dat day dea dec dec dec def def deg del den dep des det deu dex dif dif dif dim dip dir dis dis dis dis dis div dom dos dou dri Dum dus dyn dyn ear eas ecl Edd eff Ein eje ele ele ele ele eli emb emi Enc ene ens eph epo equ equ eru eth Eul eve evo exc exc exi exo exp exp ext ext fab fai Fan Fea fem fer fie fil fir fis fla flo flu foc for for Fou fra fre fre fro fun G r Gal gal gam gas Gau gel gen geo geo geo Gho gla goa gra gra gra gra gre Gre gro gyr had hal har har HD Hea Hel hel Her her hid hig Hip hom hor hot Hub Hub hun hyd hyd hyg Hyp ice ide ima imm imp imp inc ind ind ine inf inf inf ini ins ins int int int int int int int int int inv ion iro ise iso iso Jab jet Jov Jur Kel Kep kil kit Kui Lag lam lan Lar Lat law lea lem lep Li- lig lim lin lin lio lit loc lod lon Lor low Lum lun Lup Lyn mac mag mag mag mag mag mai man mar mas mas mat Max mea mec mel mer mes met met met mic mid mil Min mir mix mod mol mom Moo mor mov mul mur nab nar nat neb neg nes neu New New nig nod non non non Nor nua nuc nul Nun OBC obl obs occ oct off Ohm on- ope opp opt opt orb orb org Ori ort Ost out ove p m Pal par par par par Pas pat Peg Peo per per per per per pha Phe pho pho pho phy pin pla pla pla pla pla plu poi pol pol Pol pol pos pos pot pra pre pre pre pre pri pri pro pro pro pro pro pro pro pse pul Pup Qua qua qua qua que rac rad rad rad rad rad rad ran rap ray rea rea rec rec red red ref ref reg rel rel rel ren res res res res ret rev Ric rig rin roc roo rot rot rur Sac sal sat sca sca Sch sci Scu sec sec Sed sel sem sen Ser Sey Sha she sho sid sig sim sin sip ske sli smo soc sol sol sol sol sol sou spa spa spe spe spe spe Spi spi spo squ sta sta sta sta Ste ste ste sto str str str sub sub sub sun sup sup sup sup sur sus sym syn T-s tar Tei tem ter tes the the the the thi thr tid tim Tis Too Tor tra tra Tra tra tra tri tri tru Tul tur Tyc Typ ult unb und uni uni unr upp Urs vac van Var veg Ven ver vib vio vir vis vol VY war wat wav WC8 Web wes whi win WN1 wob wri X-r yoc zen Zhe > >>