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: 13003 Search : far
impossible
  ناشدنی   
nâšodani (#)

Fr.: impossible   

Not possible; unable to be, exist, happen. Unable to be done, performed, effected.

in-; → possible.

impostor
  دغلکار   
daqalkâr

Fr.: imposteur   

On who pretends to be what he is not.

M.Fr. imposteur, from L.L. impostor, agent noun from impostus, from imponere "to place upon, impose upon, deceive," from → in- "into, in, on, upon" + ponere "to put place," → position.

Daqalkâr, from daqal "imposture, deceit" + -kâr, agent noun suffix, from kardan, → -or.

imprecise
  ناپرسون   
nâparsun

Fr.: imprécis   

Not precise; not exact; vague.

From im-, variant of → in- + → precise.

imprecision
  ناپرسونش   
nâparsuneš

Fr.: imprécision   

The quality of lacking → precision.

From im-, variant of → in- + → precision.

impress
  درهاویدن   
darhâvidan

Fr.: imprimer; impressionner   

1) To press, to apply with pressure, especially to leave a mark.
2) To produce a profound effect upon the mind.

in-; → press.

impression
  درهاوش   
darhâveš

Fr.: impression   

1) A strong effect produced on the intellect, feelings, conscience, etc.
2) The first and immediate effect of an experience or perception upon the mind (dictionary.com).

press + -ion variant of → -tion.

impressionable
  درهاویدنی   
darhâvidani

Fr.: impressionnable   

Capable of being impressed; easily impressed.

impress; → -able.

impressionism
  درهاوشگرایی   
darhâvešgerâyi

Fr.: impressionisme   

1) A style of painting developed in the last third of the 19th century, characterized chiefly by short brush strokes of bright colors in immediate juxtaposition to represent the effect of light on objects.
2) A manner of painting in which the forms, colors, or tones of an object are lightly and rapidly indicated.
3) A manner of sculpture in which volumes are partially modeled and surfaces roughened to reflect light unevenly (Dictionary.com).

impression; → -ism.

impressive
  درهاونده   
darhâvandé

Fr.: impressionnant   

Having the power to impress, to raise admiration, awe, respect, etc.

impress; → -ive.

impulse
  تکانه   
tekâné (#)

Fr.: impulsion   

Of a force acting on a body, the → product of the → force and the → time for which it acts. If the force changes with time, the impulse is the → integral of the force with respect to the time during which the force acts, and is equal to the total change of → momentum produced by the force: ∫F dt = ∫m dv. Impulse is a → vector quantity.

From L. impulsus "a push against, pressure, shock," p.p. of impellere "to push, strike against, drive forward," from → in- "into" + pellere "to push, drive."

Tekâné, from tekân "involuntary motion, sudden shaking," related to tak "rush, quick motion, stroke, blow" (tâxtan, tâzidan "to run; to hasten; to assault"); Mid.Pers. tak "assault, attack;" Av. taka- "leap, run," from tak- "to run, flow;" 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.

impulse-momentum principle
  پروز ِ تکانه-جنباک   
parvaz-e tekâné-jonbâk

Fr.: principe impulsion-quantité de mouvement   

The vector → impulse of the → resultant force on a particle, in any time interval, is equal in magnitude and duration to the vector change in momentum of the particle: ∫F dt = mv2 - mv1. The impulse-momentum principle finds its chief application in connection with forces of short duration, such as those arising in collisions or explosions. Such forces are called → impulsive forces.

impulse; → momentum; → principle.

impulsive force
  نیروی ِ تکانه‌مند   
nitu-ye tekânemand

Fr.: force impulsionnelle   

Relating to → impulse, the force which is very large but acts for a very short time.

Impulsive, adj. of → impulse; → force.

impurity
  ناژاوی   
nâžâvi (#)

Fr.: impureté   

A substance that is incorporated into a semiconductor material to provide free electrons (n-type impurity) or holes (p-type impurity).

Impurity, from im- negation prefix, → in-, + purity, O.Fr. pureté, from L.L. puritatem (nom. puritas) "cleanness, pureness," from purus "clean;" cf. Av. pūitika- "serving for purification," Mod.Pers. pâk "clean;" Skt. pavi- "to become clean," pávate "purifies, cleanses;" O.H.G. fouwen, fewen "to sift;" PIE base *peu- "to purify, cleanse."

Nâžâvi "impurity," from nâ- negation prefix, → in-, + žâv "pure" + -i noun suffix.

in phase
  هم‌فاز   
hamfâz (#)

Fr.: en phase   

The condition which exists when two waves of the same frequency pass through their maximum and minimum values in a correlated or synchronized way.

in; → phase.

Hamfâz, from ham- "together," → com- + fâzphase.

in situ
  درجا   
dar jâ (#)

Fr.: in situ   

Situated in the natural or original position or place.

From L. in, → in-; L. situ, → site.

Dar "in," → in-; , → place.

in-
  ۱) در-؛ ۲) نا-، بی-، ان-، اَ-   
1) dar-; 2) nâ-, bi-, an-, a-

Fr.: en-   

1) Prefix meaning "into, in, on, upon, toward, at;" variants im-; il-; ir- by assimilation of -n- with the following consonant. It occurs also sometimes as en, in loans from O.Fr.
2) Prefix meaning "not, opposite of, without."

1) From L. in; cf. Gk. en; P.Gmc. *in (cf. O.Fris, Du., Ger., Goth. in); O.E. in, inne "within."
2) From L. in- "not," cognate with Gk. an-; O.Pers./Av. an-, a- "not, without;" Skt. an-, a- "not;" P.Gmc. *un-; O.E. un-.

1) Dar- "in," from Mid.Pers. andar, → intra-.
2) nâ-, na "not," ma- "not" (prohibitive); Mid.Pers. nê, ma "no, not;" O.Pers. naiy, nai "not;" Av. nôit, naē "not;" cf. Skt. "not;" L. ne-, in-, un-; Gk. ni; Lith. ; O.C.S. ne "not;" PIE *ne-.
bi- privative prefix, from Mid.Pers. abi-, O.Pers. *apaiy-, Av. apa-.
a-, an-, from O.Pers./Av. negation prefix appearing before consonants and vowels respectively. A couple of examples in Mod.Pers.: amordâd "immortality, name of the fifth month in the Iranian calendar," anušé; "fortunate, happy," anirani "non Iranian," âhu "vice, defect," âsoqdé "unburnt, half-burnt wood."

in-group
  خودی   
xodi (#)

Fr.:   

A group to which the speaker, the person spoken of, etc. belongs.

in-; → group.

Xodi "insider, familiar, friend," from xod "own," → self-.

inaccuracy
  نارَشمندی   
nârašmandi

Fr.: imprécision, inexactitude   

The quality or condition of being inaccurate.
The difference between the input quantity applied to a measuring instrument and the output quantity indicated by that instrument. The inaccuracy of an instrument is equal to the sum of its instrument error and its uncertainty.

From negation prefix → in- + → accuracy

inactive
  ناژیرا   
nâžirâ

Fr.: inactif   

1) Not → active.
2) Chem.: Not → reactive.

in-; → active.

incandescence
  فروزندگی   
foruzandegi

Fr.: incandescence   

State of glowing at high → temperature; white or bright-red → heat.

Quality, state noun from → incandescent.

<< < -es -iv -ti 21- a p abe abs abs acc acc acc act act ada adi ads aes Age Alb Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app app arb are ari art ass ast ast ast Atl ato ato Aug aut awa azi bac bal Bar Bar Bay bea Bep Bet BIC bij bin bio bir bla bla blu blu bol Boo bou Bq bre bri bub B[e cal cal can car car Cas cat cau cel cen Cer cha cha cha che chi CI cir cir cla cle clo clu co- cob 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 cov cra cri cro cry cum cur cyc d'A dar dat DC dea dec dec dec def def deh Del den dep des det deu dia 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 fir fla flo flu foc For for fos fra fre fre fro fun g m Gal gal gal gas gau gel gen geo geo geo gho gla gno gra gra gra gra Gre Gre gro gyr had hal har Har HD hea hel hel Her Her Hic hig hip hol hor hos hov Hub hun hyd hyd Hyd hyp IC ide ill ima imp imp inc inc ind ind inf inf inf inf inj ins ins int int int int int int int int inv Io ion iro isl iso iso Jal JHK Jul jur Kel Kep kin kne L2 Lag lam Lap lar lat law Lec len Lep lib lig lin lin lin liq lit loc log lon los low lum lun lux Lyr mac 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 mom moo mor mov mul mur Na nar nat nea neg Nes neu New New Nic nod non non non Nor nov nuc nul num OB obl obs occ Ock off Ohm on- ope opi opt opt orb orb ord Ori ort OSI out ove ozo pal pan par par par par pat pec pen per per per per per Pfu pha pho pho pho phy pie pix Pla pla pla pla Pli Poi pol pol pol pol por 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 rak ran rat Ray rea rec rec rec red ref ref reg reg 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 SHB sho sib sid sil sim sin sit sky slo Sne Soc sol sol sol sol son sou spa spa spe spe spe spe sph spi spo Squ sta sta sta sta ste ste ste sto str str str sub sub sub sum sup sup sup sup sur sus sym syn T d tap tec tem ten tes the the the the thi thr tid tim tip ton tor tow tra tra tra tra tri tri tru tub tur two Typ ult un- und uni uni uno upp urg UX Van var veg vel ver vib vio vir vis Voi vow wan wat wav WC wea wel whi Wil wir WNh wor X-r yel Z C zer ZZ > >>