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
fundamental star
  ستاره‌ی ِ بنیادین   
setâré-ye bonyâdin

Fr.: étoile fondamentale   

A relatively bright star for which coordinates and proper motion have been determined to a very high degree of accuracy.

fundamental; → star.

fuse
  ۱) ایویدن؛ ۲) گداختن   
1) ividan; 2) godâxtan

Fr.: fusionner; fondre, mettre en fusion   

1) To unite or blend into a whole, as if by melting together. Related terms: → coalesce; → merge; → unify.
2) To combine or blend by melting together; melt (Dictionary.com).

From L. fusus "poured, melt, cast," p.p. of fundere "to pour, melt."

1) Ividan, literally "to make (combine) into one entity," from iv, → one, + -idan infinitive suffix.
2) Godâxtan "to melt," from Mid.Pers. vitâxtan, vitâcitan "to melt," from Av. vi-taxti- "flowing away, melting," from vi- "apart, away from, out" (O.Pers. viy- "apart, away;" cf. Skt. vi- "apart, asunder, away, out;" L. vitare "to avoid, turn aside") + tak- "to run, to flow," taciāp- "flowing water," tacinti (3pl.pers.act.) "to flow," tacar- "course," tacan "current, streaming;" Mod.Pers. tâz-, tâxtan "to run; to hasten; to assault," tâzi "swift (greyhound)," tak "running, rush;" Mid.Pers. tâz-, tâxtan "to flow, to cause to walk," tc- "to flow, to walk," tag "running, attack," tâzig "swift, fast;" Khotanese ttajs- "to flow, to walk;" cf. Skt. tak- "to rush, to hurry," takti "runs;" O.Ir. tech- "to flow;" Lith. teketi "to walk, to flow;" O.C.S. tešti "to walk, to hurry;" Tokharian B cake "river;" PIE base *tekw- "to run; to flow;" → flow.

fusion
  ۱، ۲، ۳) ایوش؛ ۳) گداز   
1, 2, 3) iveš; 3) godâz (#)

Fr.: fusion   

1) The act or process of fusing; the state of being → fused; that which is fused; the result of fusing.
2) A → nuclear reaction between atomic nuclei (→ nucleus) as a result of which a heavier nucleus is formed and a large quantity of → nuclear energy is released. → proton-proton chain, → CNO cycle, → nucleosynthesis.
3) Change of the → state of a → substance from → solid to → liquid which occurs at a definite → temperature at a given applied → pressure. Same as melting.

From M.Fr. fusion, from L. fusionem, from fusus, p.p. of fundere "to pour, melt."

Verbal noun form of → fuse.

future
  آینده   
âyandé (#)

Fr.: future   

General: Time that is to be or come hereafter.
In a → space-time diagram, those events that could be influenced by a given element.

M.E. futur, from O.Fr., from L. futurus "about to be," irregular suppletive future participle of esse "to be."

Âyandé "future" agent noun/adjective of âmadan "to come, to occur, to become," from Mid.Pers. âmatan; O.Pers. gam- "to come; to go," Av. gam- "to come; to go," jamaiti "goes;" Proto-Iranian *āgmatani; Skt. gamati "goes;" Gk. bainein "to go, walk, step;" L. venire "to come;" Tocharian A käm- "to come;" O.H.G. queman "to come;" E. come; PIE root *gwem- "to go, come."

future light cone
  مخروط ِ نوری ِ آینده   
maxrut-e nuri-ye âyandé (#)

Fr.: cône de lumière futur   

The set of all points in a → space-time diagram that are reached by signals travelling from a specified point at the speed of light.

future; → light; → cone.

fuzz
  پرز   
porz (#)

Fr.: duvet, poils fins   

1) Loose, light, fibrous, or → fluffy matter.
2) A mass or coating of such matter.
3) (Of an image) A blur. (Dictionary.com).

Of unknown origin; cf. Du. voos "spongy, woolly."

Porz "short fuzzy ends of fibers on the surface of cloth, any downy coating," of unknown etymology.

fuzzification
  پرزوارش   
porzvâreš

Fr.: fuzzification   

The first step carried out in a → fuzzy logic system during which a → crisp set of → input data are gathered and converted to a → fuzzy set using fuzzy → linguistic variables, fuzzy linguistic terms, and → membership functions.

Verbal noun of → fuzzify; → -tion.

fuzzify
  پرزواریدن   
pozvâridan

Fr.: fuzzifier   

To convert a → crisp set to a → fuzzy set in a → fuzzy logic system.

fuzzy; → -fy.

fuzziness
  پرزواری   
porzvâri

Fr.:   

The state or condition of being → fuzzy.

fuzzy; → -ness.

fuzzy
  پرزوار   
porzvâr

Fr.: flou, crépu   

1) Of the nature of or resembling → fuzz.
2) Covered with fuzz.
3) Indistinct; → blurred (Dictionary.com).
See also: → fuzzy image, → fuzzy logic, → fuzzy set.

From → fuzz + -y adj. suffix, from O.E. -ig, cognate with L. -icus, → -ic.

Porzvâr "resembling fuzz," from porz, → fuzz, + -var, a suffix of possession, similarity, and aptitude (e.g., omidvâr, sezâvâr, sugvâr, šâhvâr, gušvâr), → -oid.

fuzzy image
  وینه‌ی ِ پرزوار، تصویر ِ ~   
vine-ye porzvâr, ~ tasvir-e

Fr.: image floue, ~ estompée   

Same as → blurred image.

fuzzy; → image.

fuzzy inference system
  راژمان ِ دربرد ِ پرزوار   
râžmân-e darbord-e porzvâr

Fr.:   

A way of → mapping an → input space to an → output space using → fuzzy logic. FIS uses a collection of fuzzy → membership functions and rules, instead of Boolean logic, to reason about data. Also called → fuzzy logic system.

fuzzy; → inference; → system.

fuzzy inferencing
  دربرد ِ پرزوار   
darbord-e porzvâr

Fr.:   

A process used in a → fuzzy logic system where the → truth value for the premise of each rule is computed and applied to the conclusion part of each rule. This results in one fuzzy set to be assigned to each output variable for each rule.

fuzzy; → inference.

fuzzy logic
  گوییک ِ پرزوار   
guyik-e porzvâr

Fr.: logic flou   

A mathematical logic that recognizes more than simple → true and → false → propositions. With fuzzy logic, propositions can be represented with degrees of truthfulness and falsehood. In this system, → truth values are → fuzzy sets without sharp boundaries (→ crisp set) in contrast with → classical logic. Fuzzy logic is applied to a wide range of problems including: industrial control, domestic goods, decision making, robotics, intelligent machines, and image processing in medicine.

fuzzy; → logic.

fuzzy logic system
  راژمان ِ گوییک ِ پرزوار   
râžmân-e guyik-e porzvâr

Fr.: système de logic flou   

An engineering system which uses → fuzzy logic. It generally consists of four main components: → fuzzification interface (fuzzifier), → fuzzy rule base, → fuzzy inferencing unit, and → defuzzification interface (difuzzifier). Also called → fuzzy inference system.

fuzzy; → logic; → system.

fuzzy rule base
  پایگاه ِ رزن ِ پرزوار   
pâygâh-e razan-e porzvâr

Fr.:   

A rule base in a → fuzzy logic system constructed to control the → output variable. A fuzzy rule is a simple if-then rule with a condition and a conclusion.

fuzzy; → rule; → base.

fuzzy set
  هنگرد ِ پرزوار   
hangard-e porzvâr

Fr.: ensemble flou   

A set of → truth values in → fuzzy logic that does not have sharp boundaries. Instead, set members have degrees of membership. If the value of 1 is assigned to objects entirely within the set and a 0 is assigned to objects outside of the set, then any object partially in the set will have a value between 0 and 1. This contrast with → crisp sets in → classical logic where members assume a precise value of 1 or 0. Fuzzy sets were first introduced by Lotfi A. Zadeh (1965) and defined as follows. Let X be a space of points, with a generic element of X denoted by x. Thus X = {x}. A fuzzy set A in X is characterized by a → membership function  fA(x) which associates with each point in X a real number in the interval [0,1], with the values of fA(x) at x representing the "grade of membership" of x in A. Thus, the nearer the value of fA(x) to unity, the higher the grade of membership of x in A. Generally, the intersection operations of fuzzy sets are the expansion of that operation on → nonfuzzy sets. In other words, operations on nonfuzzy sets are a particular case of operations on fuzzy sets.

fuzzy; → set.

G band
  باند ِ G   
bând-e G

Fr.: bande G   

A conspicuous band of molecular → CH (methylidine) at 4300 Å, which is present in the spectra of late-type G-K stars.

G refers to → G type stars in the spectra of which this feature is strong. → band.

g mode
  ترز ِ g، مُد ِ ~   
tarz-e g, mod-e ~

Fr.: mode g   

Waves trapped inside stars, whose restoring force is the → buoyancy. Same as → gravity mode. See also: → oscillation modes; → p mode; → f mode.

g referring to gravity; → mode.

G ring
  حلقه‌ی ِ G   
halqe-ye G

Fr.: anneau G   

The → Saturn's ring, with a width of 8,000 km, lying before the → F ring, at 164,000-172,000 km from the center of Saturn.

ring.

<< < -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 > >>