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 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 > >>

Number of Results: 13116 Search : far
academy
  فرهنگستان   
farhangestân (#)

Fr.: académie   

1) A group of authorities and leaders in a field of scholarship, art, etc., who are often permitted to dictate standards, prescribe methods, and criticize new ideas.
2) An association or institution for the advancement of art, literature, or science (Dictionary.com).

From Fr. Académie, from L. Academia, from Gk. Akademeia "grove of Akademos," a legendary Athenian of the Trojan War tales, whose estate, six stadia from Athens, was the enclosure where Plato taught his school.

Farhangestân, literally "site of culture and education," from farhang, → culture, + -estân suffix of place and time, → summer.

accelerate
  شتابیدن، شتافتن؛ شتاباندن   
šetâbidan (#), šetâftan (#); šetâbândan (#)

Fr.: accélérer   

(v.tr.) To increase the velocity of a body; to cause to undergo acceleration.
(v.intr.) To increase in speed.

Verbal form of → acceleration.

accelerated motion
  جنبش ِ شتابدار   
jonbeš-e šetâbdâr (#)

Fr.: mouvement accéléré   

The motion of an object subject to → acceleration. Opposite to → uniform motion.

Accelerated, from → accelerate; → motion.

Jonbeš, → motion; šetâbdâr "accelerated," from šetâbaccelerate + dâr "having, possessor" (from dâštan "to have, to possess," Mid.Pers. dâštan, O.Pers./Av. root dar- "to hold, keep back, maitain, keep in mind;" cf. Skt. dhr-, dharma- "law;" Gk. thronos "elevated seat, throne;" L. firmus "firm, stable;" Lith. daryti "to make;" PIE *dher- "to hold, support").

accelerating
  شتابنده   
šetâbandé (#)

Fr.: en accélération   

Moving or proceeding with → acceleration; e.g. → accelerating system; → accelerating Universe.

Verbal adj. from → accelerate.

accelerating expansion of the Universe
  سپانش ِ شتابنده‌ی ِ گیتی   
sopâneš-e šetâbande-ye giti

Fr.: expansion accélérée de l'Univers   

accelerating Universe.

accelerating; → expansion; → Universe.

accelerating system
  راژمان ِ شتابنده   
râžmân-e šetâbandé

Fr.: système en accélération   

A material system that is subject to a constant force in each and every one of its instantaneous points of trajectory.

accelerating; → system.

accelerating Universe
  گیتی ِ شتابنده   
giti-ye šetâbandé (#)

Fr.: univers en accélération   

The deduction based on the observation that the most distant → Type Ia supernovae are fainter than that expected from their → redshifts in a matter-only dominated expanding Universe. The faintness is attributed to larger distances resulting from an accelerating Universe driven by presence of a new component with strongly negative pressure. This component that makes the Universe accelerate is named → dark energy. The deceleration or acceleration of an expanding Universe, given by the general relativistic equation, is: R../R = -(4/3)πGρ(1 + 3w), where R is the linear → cosmic scale factor of the expanding Universe, G the → gravitational constant, ρ the mean density of the Universe, and w the → equation of state parameter representing dark energy. The expansion accelerates whenever w is more negative than -1/3. The Nobel Prize in Physics 2011 was awarded to the initiators of this concept, Saul Perlmutter, Brian P. Schmidt, and Adam G. Riess, for their discovery of the accelerating expansion of the Universe through observations of distant supernovae. See also the original paper: Perlmutter et al. 1999, ApJ 517, 565.

accelerating; → universe.

acceleration
  شتاب   
šetâb (#)

Fr.: accélération   

The rate at which the velocity of an object changes with time.

Acceleration, from accelerate, from L. accelerare "quicken," from → ad- "to" + celerare "hasten," from celer "swift" (cf. Skt. car, carati "to move, go, drive," Gk. keles "fast horse, horse race," Av. kar- "to walk, move, go around," Mod.Pers. cal, calidan "to move, to go, to walk" (jald? "quick, active, brisk"), Gilaki/Hamadâni jal "quick, fast,"Lori žil "motion, impulse"); PIE *kel- "to drive, set in swift motion."

Šetâb "quickness, haste, speed," Mid.Pers. ôštâp "hurry, haste," ôštâftan "to hurry, hasten," from *abi.stap-, from abi- " to; in addition to; against" + *stap- "to oppress," Arm. (loanword) štap "haste, trouble."

acceleration of gravity
  شتاب ِ گرانی   
šetâb-e gerâni

Fr.: accélération de la gravité   

The acceleration that an object experiences because of gravity when it falls freely close to the surface of a massive body, such as a planet. Same as → gravitational acceleration.

acceleration; → gravity.

acceleration parameter
  پارامون ِ شتاب   
pârâmun-e šetâb

Fr.: paramètre d'accéleration   

A measure of the departure from a constant rate of the acceleration of the Universe, expressed by: q(t) = R(t)R ..(t)/R .2(t), where R(t) represents the size of the Universe at time t. Traditionally, a negative sign is inserted in the above equation for the → deceleration parameter.

acceleration; → parameter.

accelerator
  شتابگر   
šetâbgar (#)

Fr.: accélérateur   

A machine which accelerates charged atomic (ions of various elements) or subatomic particles (usually electrons and protons) to high energies. → cyclotron; → synchrotron.

Accelerator, from accelerate, → acceleration, + -or agent suffix, from M.E. -or, -our, from O.F. -eor, -eur, from L. -or.

Šetâbgar, from šetâbacceleration + -gar agent suffix, → -or.

acceptor
  پذیرنده   
pazirandé (#)

Fr.: accepteur   

In a → semiconductor, an → impurity which creates a hole in the electronic structure of the crystal and causes p conduction. → donor; → impurity.

M.E. acceptour, from O.Fr. acceptour, from L. acceptor, from acceptare "take or receive willingly," from accipere "to receive," from → ad- "to" + capere "to take, hold, seize," PIE base *kap- "to grasp" (cf. Skt. kapati "two handfuls," Gk. kaptein "to swallow," Goth. haban "have, hold," O.E. habban "to have, hold," probably Mod.Pers. qâp-, qâpidan, kapidan "to seize, rob," Av. haf-, hap- "to keep, observe").

Pazirandé agent noun from paziroftan "to receive, accept, admit," Mid.Pers. padiriftan, padir- "to receive, accept," from Proto-Iranian *pati- + *grab- "to grab, seize, take," Av./O.Pers. grab- "to take, seize;" cp. Skt. grah-, grabh- "to seize, take," graha "seizing, holding, perceiving," M.L.G. grabben "to grab," from P.Gmc. *grab (E. grab); PIE *ghrebh- "to seize."

access
  ۱) دسترسی داشتن؛ ۲) دسترسی   
1) dastrasi dâštan; 2) dastrasi (#)

Fr.: accès   

1) To have the right to connect to a computer or a server and retrieve information.
2) The act or instance of accessing a computer.

M.E. accesse, from O.Fr. acces "onslaught," from L. accessus "a coming to, an approach," p.p. of accedere "to approach, enter upon" from → ad- "to" + cedere "go, move."

Dastrasi "access," from dast "hand" (Mid.Pers. dast; O.Pers. dasta-; Av. zasta-; cf. Skt. hásta-; Gk. kheir; L. praesto "at hand;" Arm. jern "hand;" Lith. pa-žastis "arm-pit;" PIE *ghes-to-) + rasi, verbal noun of rasidan "to attain; to arrive" (Mid.Pers. rasidan "to arrive, to mature;" O.Pers./Av. rasa- present stem of ar- "to move, go or come toward;" cf. Skt. ar-, rcchati "reaches;" Gk. erkhomai "to go, to reach;" L. oriri "to rise"); dâštan "to have, hold, maintain, possess" (Mid.Pers. dâštan; O.Pers./Av. root dar- "to hold, keep back, maitain, keep in mind;" cf. Skt. dhr-, dharma- "law;" Gk. thronos "elevated seat, throne;" L. firmus "firm, stable;" Lith. daryti "to make;" PIE *dher- "to hold, support").

accident
  دشامد   
došâmad (#)

Fr.: accident   

An unexpected and undesirable event; an unforeseen and unplanned event or circumstance.

M.E., from M.Fr., from L. accidentum, pr.p. of accidere "to happen, fall out" from ad- "to" + cadere "to fall."

Došâmad, from doš- prefix meaning "bad, ill, abnormal" (Mid.Pers. duš-, duž-, O.Pers./Av. duš-, duž- "bad, ugly, evil," cognate with Skt. dus-, Gk. → dys- "bad, hard, unlucky") + âmad, from âmadan "to come, happen," as in the current term pišâmad "event, happening."

acclaim
  آزوییدن   
âzuyidan

Fr.: acclamer   

1) To welcome or salute with shouts or sounds of joy and approval; applaud.
2) To announce or proclaim with enthusiastic approval (Dictionary.com).

From ac-, variant of → ad-, + → claim.

accomplish
  انجام دادن   
anjâm dâdan (#)

Fr.: accomplir, exécuter   

To bring to its goal or conclusion; carry out; perform; finish (Dictionary.com).

M.E. accomplice, from O.Fr. acompliss-, p.p. stem of acomplir "to fulfill, complete," from L. → ad- "to" + complere "to fill up," → complete.

Anjâm dâdan, literally "to make an end of, to finish; to carry out," from anjâm "end, conclusion" (from Mid.Pers. hanjâm "end, completion, outcome;" ultimately from Proto-Ir. *ham-gam-, from *ham-, → com-, + *gam- "to come," cf. Av. gam- "to come," related to Pers. âmadan, → walk), + dâdan "to give, commit," → yield.

accomplishment
  انجامداد   
anjâmdâd

Fr.: œuvre accomplie, projet réalisé   

1) An act or instance of carrying into effect; fulfillment.
2) Something done admirably or creditably (Dictionary.com).

accomplish; → -ment.

account
  اژمر   
ažmar

Fr.: compte   

On a multiuser → computer system or → network, a method of identifying a particular → user, usually requiring a → password to enter.

M.E. a(c)ount(e), ac(c)ompte, from O.Fr. aco(u)nte, acont, "account, reckoning, terminal payment," from a "to," → ad- + cont "counting, reckoning of money to be paid," from L.L. computus "a calculation," from L. computare "calculate, → compute."

Ažmar, from Kurd. žmârtin, žmêr-, variant of šomâr, šomârdan "to → count."

accrete
  فربالیدن   
farbâlidan

Fr.: accréter   

To grow or increase gradually, by the process of → accretion.

Back-formation from → accretion.

accreted gas
  گاز ِ فربالیده   
gâz-e farbâlidé

Fr.: gaz accrété   

The gas involved in various accretion processes, such as that fed into an → accretion disk, pulled by a compact object, or used in the mass growth of a galaxy.

accretion; → gas.

<< < -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 > >>