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: 12948 Search : far
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.

feedhorn
  کرنا، کرنای ِ خوراند   
karnâ, karnâ-ye xorând

Fr.: cornet d'alimentation   

In a → radio telescope, a device located at the → focal point of the → antenna. It receives the → radio waves which the antenna collects and guides them to the → detector.

feed; → horn.

<< < -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 div dog Dop dou dra dua dus dwa dyn e-m ear ecl eco eff ein Ein elb ele ele ele ele Els emi emp ene enr env epi equ equ Eri est Euc eva evo exc exc exh exo exp exp ext ext f-n Fah fam fau fee Fer fib fil fin fir fix fle flu foc for for for fra fre fre fri fun fuz gal gal gal Gan gau GCN gen geo geo geo geo Gl glo gra gra gra gra gra gre gro GW1 hab hal han HAR haz hea hel hel Hen Her heu Hig Hil hol hop hor hou Hub Hum Hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind ine inf inf inf inh INP ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jos Jun K2 Kep key kin Kol lag lam Lan lar las lav lea leg len lev lig lim lin lin lin lis lob loc log lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal mar mas mas mat max mea mea mee Men mer met met met mic mid Mil min Mir mix mod mod mol mon Mor mou mul muo mys nan nat nav nec Nep neu New New NGC nob nom non non nor not nuc nuc num Nyq obj obs obs oce oen OH omn opa ope opt opt opt orb ord Ori ort osc out ove oxy pal pan par Par par par pas pea Pen per per per per per pet pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop pos pos pow pre pre pre Pre pri pri pri pro pro pro pro pro pro Pro pub pul pyr qua qua qua qua Qui rad rad rad rad rad rad ram ran rat rea rec rec rec red ref ref reg reg rel rel rem rep res res res ret rev rho Rie rim riv rol Ros rot rul S a Sah san Sat sca Sch Sch scr sec sec sec sei sel sem sep set sha she sho sid sig sil sim sin sit sky slu sno sof sol sol sol sol sou sou spa spa spe spe spe sph spi spl spr sta sta sta sta sta ste ste sti sto str str sub sub sub sug sun sup sup sup sup sur syl syn sys tal Tay tel ten ter tex the the the thi tho thu tid tim tod top tot tra tra tra tra tri tri tro tru tur twi Typ UFO ult unc uni uni uni upg ura uti val var vec vel ver ver vig vir vis voc von wak Was wav wax wea wei whi Wie win WN6 wom X-r yel you zer zod > >>