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: 12937 Search : far
dispersive
  پاشنده، پاششی   
pâšandé, pâšeši

Fr.: dispersif   

Tending or serving to disperse.

From → disperse + → -ive.

dispersive index
  دیشن ِ پاششی   
dišan-e pâšeši

Fr.: indice de dispersion   

The reciprocal of the → dispersive power.

dispersive; → index.

dispersive medium
  مدیم ِ پاشنده   
madim-e pâšandé

Fr.: milieu dispersif   

A medium in which the → phase velocity is a function of → wave number (→ frequency).

dispersive; → medium.

dispersive power
  توان ِ پاشش   
tâvân-e pâšeš

Fr.: pouvoir dispersif   

A measure of the ability of a medium to separate different colors of light. It is defined by: (n2 - n1)/(n - 1), where  n1 and n2 are refractive indices at two specified widely differing wavelengths, and n is the → index of refraction for the average of these wavelengths.

dispersive; → power.

displacement
  جا-به-جایی   
jâ-be-jâyi (#)

Fr.: déplacement   

Physics: A vector quantity that specifies the change of position of a body or particle from the mean position or position of rest.
Geology: The offset of rocks caused by movement along a fault.

From displace, from → dis- + place + -ment.

Jâ bé jâyi, noun of jâ bé jâ literally "place to place," from "place," from Mid.Pers. giyag "place," O.Pers. ā-vahana- "place, village," Av. vah- "to dwell, stay," vanhaiti "he dwells, stays," Skt. vásati "he dwells," Gk. aesa (nukta) "to pass (the night)," Ossetic wat "room; bed; place," Tokharian B wäs- "to stay, wait;" PIE base ues- "to stay, live, spend the night."

displacement current
  جریان ِ جا-به-جایی   
jarayân-e jâ-be-jâyi (#)

Fr.: courant de déplacement   

In electromagnetism, a quantity which is not a real current (movement of charge), but has the units of current and has an associated magnetic field. The physical meaning of this displacement current is that a changing electric field makes a changing magnetic field.

displacement; → current.

display
  ۱) نمودن، نمایاندن، نمایش‌دادن؛ ۲) نمایش   
1) nemudan, nemâyândan, nemâyeš dâdan; 2) nemâyeš (#)

Fr.: 1) visualiser; 2) visualisation   

1a) To show; make visible.
1b) Of computers, to show the output data on a screen.
2a) The act of displaying.
2b) Of computers, a visual representation of information.

From O.Fr. despleier "to unfold, spread out," from L. displicare "to scatter," from → dis- "un-, apart" + plicare "to fold, twist," from PIE base *plek- "to plait, twist" (cf. Gk. plekein "to plait," L. plectere "to plait, braid, intertwine," Av. frašna- "helmet" (in ərəzatô.frašna- "having a silver helmet" (epithet of Mithra), Skt. praśna- "turban," O.H.G. flehtan "to plait," Russ. plesti "to plait").

Nemudan, nemâyândan "to show, display," from Mid.Pers. nimūdan, present stem nimây- "to show," from O.Pers./Av. ni- "down; into," → ni-, + māy- "to measure," cf. Skt. mati "measures," matra- "measure," PIE base *me- "to measure;" cf. Gk. metron "measure," L. metrum.

displease
  وازوشیدن   
vâzušidan

Fr.: déplaire   

1) To incur the dissatisfaction, dislike, or disapproval of; offend; annoy.
2) To be unpleasant; cause displeasure (Dictionary.com).

dis-; → please.

displeasure
  وازوشه   
vâzušé

Fr.: mécontentement, déplaisir   

Dissatisfaction, disapproval, or annoyance.

dis-; → pleasure.

disqualification
  واچونایش   
vâcunâyeš

Fr.: disqualification   

An act or instance of disqualifying; the state of being disqualified.

disqualify; → -tion.

disqualified
  واچوناییده، واچونامند   
vâcunâyide, vâcunâmand

Fr.: non qualifié   

(of a person) declared ineligible for an office, activity, or competition because of an offence or infringement (OxfordDictionaries.com).

dis-; → qualified.

disqualify
  واچوناییدن، واچونامند کردن   
vâcunâyidan, vâcunâmand kardan,

Fr.: disqualifier   

To deprive of qualification or fitness; render unfit; incapacitate (Dictionary.com).

dis-; → qualify.

disruption
  گسیخت   
gosixt

Fr.: rupture   

Forcible division into pieces of an object. → tidal disruption.

From L. disruptio "a breaking asunder," noun of action from p.p. stem of disrumpere "break apart, split, shatter, break to pieces," from → dis- "apart" + rumpere "to break."

Gosixt, past stem of gosixtan "to tear away, to beark off."

dissect
  واسکنجیدن   
vâsekanjidan

Fr.: disséquer   

1) To cut apart (an animal body, plant, etc.) to examine the structure, relation of parts, or the like.
2) To examine minutely part by part; analyze: to dissect an idea (Dictionary.com).

L. dissectus, p.p. of dissecare "to cut to pieces," from dissecare "cut in pieces," from → dis- "apart" + secare "to cut," → section.

Vâsekanjidan, from vâ- "apart," → dis-, + sekanjidan "to cut to pices," cognate with šekastan "to break," → section.

dissection
  واسکنجش   
vâsekanješ

Fr.: dissection   

The act of dissecting.

dissect; → -tion.

dissipate
  افتالیدن   
eftâlidan

Fr.: dissiper   

1) To scatter in various directions. To spend or use wastefully.
2) To cause to lose (energy, such as heat) irreversibly. See also: → dissipation, → dissipative.

From L. dissipatus, p.p. of dissipare "to disperse, squander," from → dis- "apart" + supare "to throw, scatter."

Eftâl, eftâleš, from eftâlidan "to disperse; to tear; to break," ultimately from Proto-Ir. *abi-tard-, from *tard- "to pierce, split;" cf. Skt. tard- "to split, pierce, open;" Lith. trandéti "to be eaten by moths or worms;" PIE base *terd- "to pierce" (Cheung 2007).

dissipation
  افتال، افتالش   
eftâl, eftâleš

Fr.: dissipation   

The loss of energy over time by a → dynamical system, typically due to the action of → friction or → turbulence. The lost energy is converted into heat, raising the temperature of the system. See also: → Ohmic dissipation. → viscous dissipation.

Noun form of → dissipate.

dissipative
  افتالی   
eftâli

Fr.: dissipatif   

Relating to → dissipation.

dissipate; → -ive.

dissipative system
  راژمان ِ افتالی   
râžmân-e eftâli

Fr.: système dissipatif   

A → dynamical system which undergoes energy → dissipation. Such a system gives rise to → irreversible processes, associated with a time-asymmetric evolution of observable quantities.

dissipative; → system.

dissociate
  واهزیدن   
vâhazidan

Fr.: dissocier   

General: To separate from association of any kind.

Verbal form of → dissociation.

<< < -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 > >>