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: 13116 Search : far
spring equinox
  هموگان ِ بهاری   
hamugân-e bahâri

Fr.: équinoxe de printemps   

vernal equinox.

spring; → equinox.

spring tide
  مهکشند   
mehkešand (#)

Fr.: grande marée   

Tide that occurs when the → Earth, the → Sun, and the → Moon are in a line. This happens approximately twice a month, around → new moon and → full moon. In such a condition, known as → syzygy, the tidal force due to the Sun reinforces that due to the Moon. Spring tides have nothing to do with the season spring. The name derives from the meaning "a leap, jump, bound, rise."

Spring "a leap, jump, or bound;" M.E. springen, from spring O.E. springan "to leap, fly up; spread, grow;" cognates: O.N., O.Fris. springa, M.Du. springhen, O.H.G. springan, Ger. springen, from PIE *sprengh-, form *spergh- "to move, hasten, spring" (Skt. sprhayati "desires eagerly," Gk. sperkhesthai "to hurry."

Mehkešandak "high tide," from meh-, → high, + kešand, → tide.

sprinkle
  ۱) پشکیدن، پشکاندن؛ ۲) پشکه   
1) peškidan, peškândan; 2) pešké

Fr.: 1) asperger; 2) aspersion   

1) To scatter (a liquid, powder, etc.) in drops or particles.
2) The act or an instance of sprinkling.

M.E. sprenklen (v.); cognate with Du. sprenkelen, Ger. sprenkeln; O.E. sprengan "to sprinkle, make (something) spring, scatter."

Peškidan, from (Malâyeri, Hamedâni) peška "sprinkle, water drop," variant of (Dehxodâ) pašang "sprinkle," pešanjidan "to sprinkle, spray;" (dialects of Khorâsân, Bandar Abbâs, Kermân, Dari Kermân, Lâ) pešang "spraying;" ultimately from Proto-Ir. *pati-haic- from *haic- "to pour (out), moisten);" cf. Av. patihaēc- "to sprinkle all over, pour on;" Mid.Pers. pšnc-/paššinj- "to sprinkle;" related to Pers. xēs, xis, hēs "wet;" O.H.G. sīhan "to sift;" O.E. sēon "to flow away, to sift;" PIE root *seikw- "to pour" (Cheung 2007).

sprite
  فرفده   
farfadé

Fr.: farfadet   

A very brief, predominantly red, luminous glow, that occurs in the → mesosphere. Sprites occur high above large → thunderstorms and last only a few milliseconds. They have a lump of light on top and numerous tendrils descending downward. Sprites can shoot about 90 to 95 km up into the atmosphere, reaching the → ionosphere, and extend 160 km across. They are very difficult to see, and for that reason were not reliably recorded until 1989. See also → elve; → blue jet.

Sprite "elf, fairy, eerie, ghost-like quality," so named by D. Sentman et al. (1995, Geophys. Res. Let, 22, 1205) because of the fleeting nature of sprites; M.E., from O.Fr. esprit "spirit," from L. spiritus "soul, vigor, breath," related to spirare "to breathe."

Farfadé, from Fr. farfadet, of dialectal origin, derived from fado "fairy."

spur
  ۱، ۲، ۳، ۴، ۵) شخاک، ۱) مهمیز   
1, 2, 3, 4, 5) šaxâk, 1) mehmiz

Fr.: éperon   

1) A pointed device on the heel of a rider's boot used to urge on the horse.
2) A sharp horny part on the leg of some birds.
3) Geology: A lateral lower mountain ridge descending from the mountain or the main ridge crest.
4) Mining: A small vein branching from a main one.
5) → Orion Spur.

M.E. spur, from O.E. spura, spora "metal implement worn on the heel to goad a horse," akin to M.Du. spore, Du. spoor, O.H.G. sporo, Ger. Sporn "spur."

Šaxâk, from šax "hard ground, especially on the summit or at the skirt of a mountain; anything hard; a mountain," + noun/nuance suffix -âk.
Mehmiz "a spur, a goad," loan from Ar.

sputter
  اُسپراندن   
osparândan

Fr.:   

To emit particles, sparks, etc., forcibly or explosively, especially accompanied by sputtering sounds.

Originally "to spit with explosive sounds," cognate with Du. sputteren, W.Fris. sputterje.

Osparândan, literally "to throw out," from os- "out," → ex-, + parândan "to eject," transitive verb of paridan "to fly" (from Mid./Mod.Pers. par(r) "feather, wing," Av. parəna- "feather, wing;" cp. Skt. parna "feather," E. fern; PIE *porno- "feather").

sputtering
  اُسپرانی   
osparâni

Fr.: éjection par collision ionique   

The ejection of charged particles or atoms by a solid or liquid surface which undergoes collision with high-energy ions.

Verbal noun of → sputter.

squall
  بادزد   
bâdzad (#)

Fr.: rafale   

A sudden, violent gust of wind, often accompanied by rain, snow, or sleet. A sudden increase of the mean wind speed which lasts for several minutes at least before the mean wind returns to near its previous value. It is often accompanied by rain or snow.

Probably from a Scand. source (cf. Norw. skval "sudden rush of water," Sw. skvala "to gush, pour down").

Bâdzad, from bâd, → wind + zad past stem of zadan "to strike, beat; to do; to play an instrument" (Mid.Pers. zatan, žatan; O.Pers./Av. jan-, gan- "to strike, hit, smite, kill" (jantar- "smiter"); cf. Skt. han- "to strike, beat" (hantar- "smiter, killer"); Gk. theinein "to strike;" L. fendere "to strike, push;" Gmc. *gundjo "war, battle;" PIE *gwhen- "to strike, kill").

square
  چاروش، چهارگوش   
câruš, cahârguš

Fr.: carré   

1) A rectangle having all four sides of equal length.
2) The second power of a quantity, expressed as a2 = a × a, where a is the quantity. → inverse square law.

M.E., from O.Fr. esquire "a square, squareness," from V.L. *exquadra, from *exquadrare "to square," from L. → ex- "out" + quadrare "make square," from quadrus "a square," from quattuorfour.

Câruš, from Av. caθruša- "four sides (of a four-sided figure)", from caθru- "four," Mod.Pers. cahâr, câr "four" + uša- "angle," Mod.Pers. guš, gušé.

square degree
  درجه‌ی ِ چاروش   
daraje-ye câruš

Fr.: degré carré   

A solid angle whose cone is a tetrahedral pyramid with an angle between its edges equal to 1°. 1 square degree = 3.046 x 10-4 sr = 2.424 x 10-5 solid angle of a complete sphere.

square; → degree.

Square Kilometer Array (SKA)
     
SKA

Fr.: SKA   

An international project to construct a highly sensitive radio interferometer array operating between 0.15 and 20 GHz with an effective collecting area of one square kilometer. The number of individual telescopes will be 2000 to 3000. SKA will have a sensitivity 100 times higher than that of today's best radio telescopes and an angular resolution < 0.1 arcsec at 1.4 GHz. The site will be selected in 2012 and early science with Phase 1 is scheduled for from 2016 on. See also the SKA homepage.

square; → kilometer; → array.

square matrix
  ماتریس ِ چاروش   
matris-e câruš

Fr.: matrice carée   

A → matrix with equal numbers of → rows and → columns (i.e., an n × n matrix).

square; → matrix.

Square of Pegasus
  چهارگوش ِ پگاسوس   
Chahârguš-e Pegasus

Fr.: Carrée de Pégase   

A large → asterism of four stars, approximately square in shape, in the northern sky. Three of the stars, → Markab, → Scheat, and → Algenib, belong to the constellation → Pegasus. The fourth, → Alpheratz, was lost to Pegasus when the constellation boundaries were formalised, and now lies just within the borders of → Andromeda.

square; → Pegasus.

Chahârguš, → tetragon; → Pegasus.

square root
  ریشه‌ی ِ چاروش   
riše-ye câruš

Fr.: racine carée   

Quantity which when multiplied by itself produces another quantity.

square; → root.

square wave
  موج ِ چاروش   
mowj-e câruš

Fr.: onde carrée   

An oscillation which alternatively assumes, for equal lengths of time, one or two fixed values.

square; → wave.

squaring the circle
  چاروشش ِ پرهون، ~ ِ دایره   
cârušeš-e parhun, ~ dâyeré

Fr.: quadrature du cercle   

Same as → quadrature of the circle

square; → wave.

squaring the square
  چاروشش ِ چاروش   
cârušeš-e câruš

Fr.: quadrature du carré   

The mathematical problem of subdividing a square into a number of smaller squares, all of different sizes.

square; → square.

squark
  اسکو‌آرک   
skuârk

Fr.: squark   

In → supersymmetry theories, a hypothetical → boson super-partner of a → quark. See also → slepton.

s from → supersymmetry; → quark.

SS 433
     
SS 433

Fr.: SS 433   

A → close binary star lying at the center of the → supernova remnant W50, in → Aquila, about 18,000 → light-years away. The system consists of a normal → O star or → B star in a 13.087 day orbit around a compact object that is either a → neutron star or a → black hole. Material transferred from the normal star into an → accretion disk surrounding the compact object is ejected in two jets of ionized gas in opposite directions, at about a quarter of the speed of light. The system is also a periodic X-ray source. The jets are emitted in a cone with a half-angle of about 20°. The cone is inclined by 80° to the line of sight. The compact object precesses with a period of 164 days. This causes the projected angle of the jets to go through a 164 day cycle, giving the variation in the Doppler shifts.

Such called because this object carries number 433 in the Stephenson-Sanduleak catalog of stars with strong emission lines, compiled by Bruce Stephenson and Nicholas Sanduleak in 1977.

stability
  پایداری   
pâydâri (#)

Fr.: stabilité   

A condition in which a dynamical system slightly displaced from its equilibrium configuration always tends to return to this configuration. → instability, → instability strip.

Noun from adj. → stable.

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer aga air Alf Alg alk Alp alt alu amm ana And ang ani ano ant ant Ap apo app app Aqu Arc arg arr asc ass ast ast asy atm ato att aur aut axi B-m bad Bal bar bar Bay Bed ber Bet bif bim bin bio bis bla ble blu Bod Bol bor bou Bra Bre bro bul C-t Cal Cam can car Car Cas cat cav cel cen cer Cha cha Cha che chl Cir cir cir Cla cli clo clu co- coc coh col col col Com com com com com com com com Com con con con con con con con con con con con con coo Cor Cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl Dan dat Dav de- Deb dec dec dee def deg del Den den der det deu dew dic dif dif dil Dip dir dis dis dis dis dis diu dod Dop dou Dra dua dus dwa dyn DZ Ear ecc eco edi EHB Ein ela ele ele ele ele ell eme emp end Eng ent epi equ equ era ESP eth Eur evi exa exc exe exi exp exp ext ext ext fac fal far fec Fer fer fie fin fir fis fla Flo flu fog for for Fou fra fre fre Fro fun G s Gal gal gal Gar gau geg gen geo geo geo ger gla gly gra gra gra gra gra Gre gro GYR Had Hal hap Har HD hea hel hel Hen Her hex hig Hil hol Hoo hor hou Hub hum hyb hyd hyd hyp hys ide ign ima imp imp in- inc Ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jor jum K c Kep Ker kin kno lab Lam Lan Lap las lat Le lef len lev lig lig lin lin lin liq Lit loc log lon lou LS lun lun Lym M s Mag mag mag mag mag mag maj man Mar mas mas mat May mea mec mel mer mes met met met mic mid mil Min Mir mix mod mod mol mon mor mov mul mur mys nan nat nav nec Nep neu New New NGC nob nom non non nor nos nuc nuc num nut obj obl obs occ oct off oli oni ope opp opt opt orb ord org orp osc out ove oxi P-w pal par par par par Pas pat pej per per per per per per pha Phe pho pho pho phy pin pla Pla pla pla pla plu poi pol pol Pol pol por pos pot Poy pre pre pre pre pri pri pri pro pro pro pro pro pro Psa pul pum Q i qua qua qua qua R A rad rad rad rad rad rad Ram Ran rat rea rea rec rec red red ref ref reg rei rel rel rem rep res res res ret rev Rho Rie ril riv rog Ros rot rul S A Sag sam sat sca sca Sch Sco Sec sec sec seg sel sem sen set Sha sha shi sho sid sig sim sin Sir ske sli Smo soc sof sol sol sol sol sou sou spa spe spe Spe spe sph spi Spi spr sta sta sta sta sta ste ste ste Sto str str sub sub sub suc sun sup sup sup sup sur swa syn syn tac tas tel tem ter tes the the the the thi thr tid til tip ton tor tou tra tra tra tra Tri tri tru tsu tur two Typ UHE ult unc uni uni uni upg ura uti val var vec Vel ver Ver vie Vir vis vis vol W-R war wav wav wea Wei wha wid win WN3 Wol wri xen yok zen zij > >>