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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Number of Results: 12955 Search : far
father
  پدر   
pedar (#)

Fr.: père   

A male → parent.

M.E. fader, from O.E. fæder "father, male ancestor;" cf. O.S. fadar, Du. vader, O.N. faðir, O.H.G. fater, Ger. Vater; PIE *pəter-; cognate with Pers. pedar, as below.

Pedar, from Mid.Pers. pidar, variant pid "father;" O.Pers. pitā- "father;" Av. patar-; cf. Skt. pitár-; Gk. pater; L. pater (Fr. père, Sp. padre).

fault
  گسله   
gosalé (#)

Fr.: faille   

Geology: A fracture in the Earth's crust along which the adjacent rock surfaces have been displaced relative to each other. Movement along the fault can cause → earthquakes or, in the process of mountain-building, can release underlying → magma and permit it to rise to the surface as a volcanic eruption.

M.E. faute "deficiency," from O.Fr. faute "opening, gap; failure, flaw; lack," from V.L. *fallita "a shortcoming, falling," from L. falsus "deceptive, feigned, spurious," p.p. of fallere "to deceive, be wrong."

Gosalé, noun from gosalidan "to break; to snap asunder," ultimately from Proto-Iranian *visar-, from *vi- "apart" + *sar- "to break;" cf. Av. sairi- "fragment," asarəta- "not broken;" Skt. sar- "to break, tear apart," śūrtá- "smashed," aśīrtá- "unharmed;" Gk. keraizo "to tear, destroy," akeraios "unharmed;" PIE base *ker- "to hurt, harm."

fault surface
  رویه‌ی ِ گسله   
ruye-ye gosalé

Fr.: surface de faille   

Geology: The surface of a fracture along which dislocation of adjacent rocks has taken place.

falt; → surface.

faulting
  گسلش   
gosaleš (#)

Fr.: formation de failles   

The geological process leading to the formation of → faults.

Verbal noun, → fault.

feather
  پر   
par (#)

Fr.: plume   

One of light appendages that grow from a bird's skin and form its covering.

M.E., from O.E. fether; akin to Du. veder, Ger. Feder, O.N. fioþr, Sw. fjäder, from PIE root *pet- "to rush, to fly."

Parr "feather," variant bâl "wing," Mid.Pers. parr "feather, wing," bâl; Av. parəna- "feather," Skt. parnam, cf. O.H.G. farn "fern," PIE pornom "feather."

feature
  آرنگ   
ârang

Fr.: motif   

A prominent or conspicuous part or characteristic. → absorption feature; → coronal features; → dust feature; → emission feature.

From O.Fr. faiture "fashion, shape, form," from L. facura "a formation," from facere "to make, do, perform" (cf. Fr. faire, Sp. hacer), from PIE base *dhe- "to put, to do" (cf. Mod.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives; puts;" Skt. dadáti "puts, places;" Hitt. dai- "to place;" Gk. tithenai "to put, set, place;" Lith. deti "to put;" Czech diti, Pol. dziac', Rus. det' "to hide," delat' "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do").

Ârang "color; mode, form, manner," cf. Av. *iringa- "sign, mark" in haptôiringa- "with seven marks," from hapto- "seven," + iringa-; Mid.Pers. haptiring, Mod.Pers. haftowrang "the constellation of Great Bear;" cf. Skt. linga- "mark, token, sign."

Feautrier method
  روش ِ فوتریه   
raveš-e Feautrier

Fr.: méthode de Feautrier   

One of the most successful general methods for the numerical solution of the → radiative transfer equation. This method has been primarily used to study → radiative transfer in the → photospheres of stars.

P. Feautrier (1964), C.r. hebd. Séanc. Acad. Sci. Paris 258, 3198; → method.

Fechner's law
  قانون ِ فشنر   
qânun-e Fechner (#)

Fr.: loi de Fechner   

See → Weber-Fechner law.

fecundate
  گشنیدن   
gošnidan (#)

Fr.: féconder   

Biology: To impregnate, to fertilize.

L. fecundetus "made fruitful, fertilized," p.p. of fcundare, from fecundus "fruitful, fertile, productive," from L. root *fe-, corresponding to PIE *dhe(i)- "to suck, suckle;" cf. Skt. dhayati "sucks," dhayah "nourishing;" Gk. thele "mother's breast, nipple," thelys "female, fruitful;" Mid.Pers. dâyag "(wet-)nurse;" Mod.Pers. dâyé "(wet-)nurse;" Proto-Iranian *daH- "to suck, suckle;" O.C.S. dojiti "to suckle," dojilica "nurse;" Lith. dele "leech;" Goth. daddjan "to suckle;" O.H.G. tila "female breast."

Gošnidan, from gošn "male," Mid.Pers. gušn; cf. Av. varšni- "male;" Skt. vrsan-.

fecundation
  گشنش، گشن‌گیری، بارورسازی   
gošneš, gošngiri (#), bârvarsâzi (#)

Fr.: fécondation   

Biology: The act or process of fecundating.

fecundate; → -tion.

federal
  هیاوی   
hiyâvi

Fr.: féderal   

Relating to or characteristic of a unified body (e.g. a government) with constituent parts (states) that retain a measure of autonomy.

From Fr. fédéral, from L. foedus (genitive foederis) "league, treaty, alliance," → federate, + → -al.

Hiyâvi, from hiyâvidan, → federate.

federate
  هیاویدن   
hiyâvidan

Fr.: fédérer   

1) To join together in a → federation.
2) To organize on a → federal basis.

From L. foederatus "leagued together, allied," p.p. of foederare "to establish by treaty," from foedus "league, treaty, alliance," related to fides "faith."

Hiyâvidan, from Tabari hiyâ "together, with each other," probably related to Av. hi- "to chain, bind," hiθav- "association, assemblage," hinav- "bond, chain," hita- "fastened;" O.P. vištāspa- literally "with unbound horses;" Av. hitāspa-; Pers. gošudan "to open," → resolve; cf. Skt. sā-/say- "to bind, fasten, fetter." Coined on the model of Ger. Bund "federation, alliance, band," cognate with Pers. bastan "to bind," → absolute.

federated database system (FDBS)
  راژمان ِ پایگاه ِ داده‌های ِ هیاویده   
râžmân-e pâygâh-e dâdehâ-ye hiyâvidé

Fr.: système de base de données fédéré   

A composition of different databases which work in an integrated manner while preserving their autonomy.

federate; → database; → system.

federation
  هیاوش   
hiâyveš

Fr.: fédération   

1) The act of federating or uniting in a league.
2) A political unit formed from smaller units on a → federal basis.

Verbal noun of → federate.

federative
  هیاوشی   
hiyâveši

Fr.: fédératif   

Pertaining to or of the nature of a → federation.

federate.

federator
  هیاونده، هیاوگر   
hiyâvandé, hiyâvgar

Fr.: fédérateur   

He who, or that which, federates.

Agent noun of → federate + → -or.

feed
  خوراندن   
xorândan (#)

Fr.: alimenter   

1) To give food to; supply with nourishment.
2) To furnish with necessary material.

M.E. feden, from O.E. fedan "to nourish;" cf. O.S. fodjan, O.Fris. feda, Goth. fodjan "to feed."

Xorândan, transitive form of xordan "to eat, consume," Mid.Pers. xvardan "to eat, enjoy (food)," Av. xvar "to consume, eat;" Laki dialect hovârden "to eat;" Proto-Iranian *huar- "to consume, eat."

feedback
  بازخورد   
bâzxord (#)

Fr.: rétroaction   

1) For any system that has an → input and → output, the return of a fraction of the output to the input for the next action. Feedback process allows a system to regulate itself by monitoring its own output. It is of prime importance to the working of all regulatory mechanisms found in living and non-living nature, as well as in social systems such as education and economy.
2) By extension, any response or information about the result of a process.
3) → stellar feedback.
See also: → feedback loop, → negative feedback, → positive feedback, → radiative feedback, → feedforward.

feed; → back.

feedback loop
  گردال ِ بازخورد   
gerdâl-e bâzxord

Fr.: boucle de rétroaction   

A closed transmission path in a → feedback process involving part of the → output as an → input for correction or control of the operation of a → system.

feedback; → loop.

feedforward
  پیش‌خورد   
pišxord

Fr.:   

In a self-regulatory system, monitoring a disturbance before it enters the → system to apply corrections before the disturbance has influenced the system. See also → feedback.

feed; → forward.

<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir 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 Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee def deg del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra dua dus dwa dyn e-f Ear ecl eco edu eig Ein ela ele ele ele Ele elo emi emp ene Enl env epi equ equ Eri est Euc eva evo exc exc exh Exo exp exp ext ext f(R fac fam fat fee Fer Fib fig fin fir fix fle flu foc for for for fra fre Fre fri fun fuz Gal gal gal Gam gau Gay gen Geo geo geo geo gim glo gov gra gra gra gra gre gro Gun hab hal han Har haz hea hel hel Hen Her het Hig hil hol Hoo hor hou Hub hum hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind Ind inf inf inf inf inn ins ins int int int int int int int int inv ion ion Irr iso iso iso jan jit Jul jus Kel ker kin kni La lam lan Lap las lat Lay Led Len let lif lig lin lin lin liq Lit loc log lon lou low lum lun Lym M d Mag mag mag mag mag mag maj man mar mas mas mat mea mea mec mem mer Mes met met mho mic Mie Mil min mis MKS MOd mol Mon moo mot mul mul myo nak Nas nat neb neg neu neu New New nit noi non non nor nor nuc nuc nul nut obj obl obs occ oct off oli oni ope opp opt opt orb ord org orp osc out ove oxi pai Pan par par Par par pas Pav Pel per per per per Per per pha phi pho pho pho phy Pip Pla pla PLA pla ple plu pol pol pol pol pop pos pos pot Pra pre pre pre Pri pri pri pro pro pro pro pro pro pro Pto pul pur qua qua qua qua qui rad rad rad rad rad rad rai ran rar Ray rea rea rec rec red red ref ref reg rel rel rel rep res res res res ret RHB rid rig ris roc Ros rot rub Rut Sag sam sat sca sca Sch sci Sea sec sec see sel sem sen set Sha sha shi shu sid sil sim sin SIS ski Slo smo Soc sol sol sol sol son sou spa spa spe spe spe sph spi spi Spo squ sta sta sta sta Ste ste ste sto str str str sub sub suc sun sup sup sup sup sur Swa syn syn tab tar tel tem ter tes the the the the Tho thr tid tim Tit top tot tra tra TRA tra tre tri tri tru Tun Tus tym Typ ult unb und uni uni uns upp Urs vac van var Vei Ven ver vic Vir vir vis vol W 4 war wat wav wea wed wet wid win WN2 Wol wri xen yok zen zin > >>