An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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<< < -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 > >>

Number of Results: 12937 Search : far
quench
  ۱) اسراندن؛ ۲، ۳) اسریدن؛ ۳) آب دادن   
1) oserândan 2, 3) oseridan; 3) âb dâdan

Fr.: 1) étouffer, découper, étancher, assécher; 2) s'étouffer; 3) tremper   

1a) To put out or extinguish.
1b) Electronics: To terminate the discharge in a vacuum tube by application of a voltage.
2) To become extinguished.
3) To dip a heated object into a liquid to quickly reduce the temperature.

M.E. quenchen, from O.E. acwencan "to quench," form of root of cwincan "to go out, be extinguished."

Oseridan, oserândan, from Yaghnobi oser- "to cool," Wakhi wəsər-/wəsərt "to fade, wither," related to Pers. sard "cold, cool" (Kurd. sar, Baluchi sârt, Ossetian sald "cold" ), afsordan, afsârdan "to congeal;" Mid.Pers. sard/sart "cold;" Av. sarəta- "cold;" cf. Skt. śiśira- "cold;" L. calidus "warm;" Lith. šaltas "cold;" Welsh clyd "warm;" PIE *keltos- "cool."

quench frequency
  بسامد ِ اسرش   
basâmad-e osereš

Fr.: fréquence de découpage   

The frequency at which an oscillation is intermittently quenched, as in a super-regenerative receiver.

quench; → frequency.

quenching
  اسرش   
osereš

Fr.: étouffement, découpage, étanchement, assèchement; trempe   

The process of extinguishing, removing, or diminishing a physical property.

Verbal noun, → quench + → -ing.

quiescence
  آرمیدگی   
âramidegi

Fr.: quiescence   

A period during which an eruptive astronomical phenomenon is in a state of inactivity.

quiescent; → -ence.

quiescent
  آرمیده   
âramidé

Fr.: quiescent   

Being at rest; quiet; still; inactive. → quiescent prominence.

From L. quiescens, pr.p. of quiescere, from quies "rest, quiet."

Âramidé "quiescent, reposed, rested," from âramidan "to rest, repose," related to ârâm "quiet" (Mid.Pers. râm "peace," râmenidan "to give peace, pleasure," râmišn "peace, pleasure" (Mod.Pers. râmiš), Av. ram- "to stay, rest;" cf. Skt. ram- "to stop, stand still, rest, become appeased;" Gk. erema "quietly, gently;" Goth. rimis "rest;" Lith. rãmas "rest").

quiescent prominence
  زبانه‌ی ِ آرمیده   
zabâne-ye âramidé

Fr.: protuberance quiescente   

A → solar prominence of relatively cool material that hovers over Sun's surface for weeks or months with relatively little overall change. Such prominences are suspended above the → chromosphere by → magnetic fields. A quiescent prominence may suddenly erupt outward and dissipate, often to be replaced, in the same location, by a new one. See also → eruptive prominence; → loop prominence.

quiescent; → prominence.

quiet Sun
  خورشید ِ آرام   
xoršid-e ârâm

Fr.: Soleil calme   

The Sun when the 11-year cycle of → solar activity is at a minimum.

Quiet, M.E., from from O.Fr. quiete, from L. quies (genitive quietis) "rest, quiet;" → Sun.

Xoršid, → Sun; ârâm "quiet, rest, tranquility," → rest.

quintessence
  پنجمین‌گوهر   
panjomin gowhar (#)

Fr.: quintessence   

In cosmology, a hypothetical new "element," distinct from any normalmatter (either → baryonic or not) or radiation, intended to explain the observed ever → accelerating expansion of the Universe. Quintessence can have several types and differs from the → cosmological constant in that it can vary in space and time. In modern physics, the four known "elements" are the → baryons (proton, neutron, etc.), the → leptons (neutrinos, electrons, etc.), the → photon, and the hypothetical → non-baryonic matter, which is thought to be 80% of the total matter in the Universe. The quintessence field is a possibility which can be confirmed or disproved by measurements of the → dark energy value at different → redshifts. In some models, the quintessence is fine-tuned to explain both the → cosmological constant problem and the → inflation in the very → early Universe.

Literally "fifth essence," from M.Fr. quinte essence, from M.L. quinta essentia, from L. quinta, fem. of quintus "fifth," from quinque "five," cognate with Pers. panj, → five + essentia "being, essence," from esse "being; → existence" + -entia "-ence." In Aristotelianism, the fifth element, distinguished from the four earthly elements, was the substance of celestial bodies. Subsequently, quintessence became the purest, most highly concentrated form of a nature or essence.

Panjomin gowhar "fifth essence," from panjomin "fifth," from panj, → five, cognate with L. quinque, + gowhar "essence, substance; jewel, pearl, gem," Mid.Pers. gohr "essence, substance; jewel; stock, lineage;" cf. Skt. gôtra- "family, race, lineage, origin."

quintet
  پنج‌تایه   
panjtâyé

Fr.: quintette   

Any group of five things or persons. → Stephan's Quintet.

From Fr. quintette, from It. quintetto, diminutive of quinto "fifth," from L. quintus, related to quinque "five" cognate with Pers. panjfive.

Panjtâyé, from panj, → five, + "fold, plait, ply, part;" Mid.Pers. tâg "piece, part" + -(y)é nuance suffix.

quintic
  پنجمیک   
panjomik

Fr.: quintique   

Math.: Of the fifth degree; a quantity of the fifth degree.

From L. quint(us) "fifth," → five, + → -ic;

Panjomik, from panjom "fifth," from panj "five" + -om "-th" + -ik, → -ic.

quintic equation
  هموگش ِ پنجمیک   
hamugeš-e panjomik

Fr.: équation quintique   

An equation containing unknowns of the fifth power.

quintic; → equation.

quintic polynomial
  بلنامین ِ پنجمیک   
bolnâmin-e panjomik

Fr.: polynôme quintique   

A polynomial of degree five.

quintic; → polynomial.

Quintuplet cluster
  خوشه‌ی ِ پنجتایه   
xuše-ye panjtâyé

Fr.: amas du quintuplet   

A bright → open cluster of stars located within 100 light-years of the center of the Milky Way Galaxy, and one of the three → Galactic center clusters. The Quintuplet cluster was originally noted for its five very bright stars, but it is now known to contain many luminous → massive stars that are not detected at visible wavelengths due to heavy extinction by dust along the line of sight. The cluster is about 4 million years old and had an initial mass over 104 solar masses. The five brighter stars of the cluster are dusty → WC Wolf-Rayet stars. The Quintuplet cluster also contains two → Luminous Blue Variables, the Pistol star and FMM362. The Pistol star has a luminosity 107 times solar making it one of the most luminous stars known. The Quintuplet cluster is more dispersed than the nearby → Arches cluster.

Quintuplet, from the five brightest stars originally observed; → cluster.

quota
  بهرال   
bahrâl

Fr.: quota   

1) General: A proportional part or share of a fixed total amount or quantity.
2) Computers: The amount of a resource (disk, memory, CPU time, etc.) that is allocated to a user.

From L. quota pars "how big a share?," from quotus "of what number."

Bahrâl, from bahr "part, portion, share, lot," → quotient + -âl, → -al.

quotient
  بهر   
bahr (#)

Fr.: quotient   

The number resulting from the division of one number by another. Also the fractional notation that indicates this number.

From L. quotiens "how many times," from quot "how many," related to quis "who."

Bahr "part, portion, share, lot," related to baxš "portion, part, division," baxšidan "to divide, distribute, grant" (Mid.Pers. baxt "fortune, fate," baxtan, baxšidan "to distribute, divide;" Av. base bag- "to attribute, allot, distribute," baxš- "to apportion, divide, give to," baxta- "what is allotted (luck, fortune)," baxədra- "part, portion," baγa- "master, god;" O.Pers. bâji- "tribute, tax;" cf. Skt. bhaj- "to share, divide, distribute, apportion," bhájati "divides," bhakta- "allotted; occupied with; a share; food or a meal, time of eating?" pitu-bháj- "enjoying food;" Gk. phagein "to eat (to have a share of food)"; PIE base *bhag- "to share out, apportion").

R Aquarii
   R آبکش   
R Âbkeš

Fr.: R Aquarii   

A peculiar → Mira variable with a → pulsation period of 387 days surrounded by an extended → emission nebula. R Aqr is a → symbiotic  → binary star with a mass-losing, pulsating → red giant and an accreting hot companion with a jet → outflow which ionizes an emission nebula. The orbital period of the R Aqr binary is about 44 years as inferred from periodic phases of reduced brightness observed around 1890, 1933, and 1977. These phases are interpreted as partial obscurations of the mira by the companion with its → accretion disk and the associated gas and dust flows. The inferred orbital period is supported by → radial velocity measurements (Schmid et al., 2018, A&A 602, A53 and references therein).

R, → Beyer designation; → Aquarius.

R association
  آهزش ِ R   
âhazeš-e R

Fr.: association R   

A → stellar association containing a number of → reflection nebulae. The stars are of low or intermediate mass and young, less than a million years old. They are still surrounded by patches of dust that reflect and absorb light from the interstellar cloud in which they formed. This type of association was first suggested by Sidney van den Bergh (1966, AJ 71, 900).

R, from → reflection; → association.

r-process
  فراروند ِ r   
farâravand-e r

Fr.: processus r   

A → nucleosynthesis process in which → chemical elements heavier than → zinc are created through the intense bombardment of other elements by → neutrons in rapid succession. The essential feature of the r-process is the release of great numbers of neutrons in a very short time (less than 100 seconds). The r-process is a "rapid" version of the → s-process, occurring in supernova → core collapse and possibly when a → neutron star merges with a → black hole in a → binary star.

r stands for rapid, since the process entails a succession of rapid neutron captures on iron seed nuclei; → process.

R-type ionization front
  پیشان ِ یونش ِ گونه‌ی ِ R   
pišân-e yoneš-e gune-ye R

Fr.: front d'ionisation de type R   

A spherical → ionization front of → H II regions that moves radially outward from the → exciting star at a velocity much higher than → sound speed in the surrounding cold neutral gas of uniform density (ahead of the front). R-type ionization fronts corresponds to early evolution of H II regions, and will eventually transform into → D-type ionization fronts. If the motion of the front is supersonic relative to the gas behind as well as ahead of the front, the front is referred to as weak R. The strong R front correspond to a large density increase across the front.

R referring to a rarefied gas; → type; → ionization; → front.

R136
     
R136

Fr.: R136   

The central object of the → 30 Doradus nebula in the → Large Magellanic Cloud. Also known as HD 38268, it was thought to be a single star of several thousands → solar masses until → speckle interferometry techniques resolved it into a rich and compact star cluster. Recent high-resolution studies have shown that R136 contains 39 known O3 stars, which is more than known to be contained in the rest of the → Milky Way, → LMC, and → SMC combined. R136 is a prototype "super star cluster," with an estimated mass of 105 solar masses. Its most massive stars are less than 1-2 million yeas old, while its lower-mass stars formed 4-5 millions years ago.

The Radcliffe serial number 136 (Feast et al. 1960, MNRAS 121, 25).

<< < -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 > >>