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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<< < -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 arc Arg ari art ass ast ast ast atm ato att Aur aut axi azi bac Bal Bar Bar Bay Bec Ber bet bic bij bin bio Bir bla Bla blu blu bol Boo bou bra Bre bro bug C r cal Cal can car Car Cas cat cau 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 Cop Cor cor cor cos cos Cou cou cow cre cri cro cry cur cut Cyg dam dar dat de deb dec dec ded def deg del dem den dep des det dev dia dif dif dig dio Dir dis dis dis dis dis dis div don dou dow dro dur dwa dyn Dys ear ebb ecl edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ Equ esc eth Eur eve exa exc exe exi exp exp ext ext eye fac fal Far fed fer fer fie fin fir fit fla flo flu fol for for Fou fra fre Fre fro fuz gai Gal Gal gam gas Gau gen gen geo geo geo gia glo gol gra gra gra gra gre gri gui H I hai Ham har Hau hea hec hel hel her HES hie hig his hom hor hot Hub hum Huy hyd hyd hyl hyp ice ide ima imp imp imp inc ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iro irr iso iso ite jel Jou Jup kao Kep kil Kip Kra Lag Lam lan lar las law lea leg Leo lex lig lim lin lin lin lit Loc loc log Lor low lum lun lun Lym mac mag mag mag mag mag mai Mal mar mas mas mat max mea mec meg men mer met met met mic mic Mik min min mis mob mod mol mon moo mou mul mul mys nan Nat nau nec neo neu nev New NGC no nom non non nor not nuc nuc num nut obj obs obs occ odd OH Ome Oor ope opp opt opt orb ord ori ort osc out ove oxi pai Pan par par par par pas pea pen per per per per Per per pha phl pho pho pho pi pip Pla pla pla pla ple poa pol Pol pol pol pop pos pos pot pra pre pre pre pri pri pri pro pro pro pro pro pro pro Pto pul puz 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 Rhe rid rig ris Roe Ros rot rub rut Sag sam sat sca sca Sch sci sea sec sec see sel sem sen ser Sh2 sha shi sho sid sig sim sin Sir ske sli Smo soc sol sol sol sol sol 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 unp upp urg V20 Van var veg vel ver vib vio vir vis Vol Vul wan wat wav WC4 wea wel whi Wil wis WNL wor X-r Yer Z s zer [C > >>

Number of Results: 12982 Search : far
impact event
  رویداد ِ برخورد   
ruydâd-e barxord

Fr.: impact cosmique   

A collision between two celestial objects, specially solar system bodies, with considerable consequences. Impact events involve release of large amounts of energy. Some examples are the 1908 Siberian → Tunguska event by a → comet, the → Barringer Crater, and the collision of an → asteroid with Earth 65 million years ago, which is thought to have led to the extinction of the dinosaurs and other species of the → Cretaceous-Paleogene period.

impact; → event.

impact hazard
  آپه‌ی ِ برخورد   
âpe-ye barxord

Fr.: risque d'impact   

The danger of collision with Earth posed by solar system small bodies that pass near our planet. These objects include → near-Earth asteroids and nuclei of → comets. See also: → near-Earth object, → impact crater, → Torino scale, → Palermo scale, → Space Situational Awareness.

impact; → hazard.

impact ionization
  یونش ِ برخوردی   
yoneš-e barxordi

Fr.: ionisation par collision   

The loss of orbital electrons by an atom of a crystal lattice which has undergone a high-energy collision.

impact; → ionization.

impact parameter
  پارامون ِ برخورد   
pârâmun-e barxord

Fr.: paramètre d'impact   

1) A measure of the distance by which a collision fails being frontal.
2) In → gravitational lensing, the distance of closest approach of the light path to the → lensing object.
3) In → rainbows, the displacement of the → incident from an axis that passes through the center of the water droplet.

impact; → parameter

impact winter
  زمستان ِ برخورد   
zemestân-e barxord

Fr.: hiver par impact   

The enormous drop in temperature and the related effects of the shrouding of Earth with soot and dust particles after the planet is struck by a sizable comet or asteroid. Such a phenomenon is believed to have killed off the dinosaurs 65 million years ago.

impact; → winter.

impactite
     
impaktit, barxordit

Fr.: impactite   

A general term used for all rocks affected by, or produced by, the → shock waves and other processes generated by hypervelocity → meteorite → impact events. Impactites occur in and around the → impact crater, typically as individual bodies composed of mixtures of melt and rock fragments, often with traces of meteoritic material.

impact; → -ite.

impactor
  برخوردگر   
barxordgar

Fr.: impacteur   

A natural impacting body, such as a comet, asteroid, or planet. It can also be a space probe designed to collide with an astronomical body in the solar system.

Impactor, from → impact + -or a suffix forming agent nouns.

Barxordgar, from barxord, → impact, + -gar agent suffix, from kar-, kardan "to do, to make" (Mid.Pers. kardan, O.Pers./Av. kar- "to do, make, build," Av. kərənaoiti "makes," cf. Skt. kr- "to do, to make," krnoti "makes," karma "act, deed;" PIE base kwer- "to do, to make").

impart
  درپاردن   
darpârdan

Fr.: donner, transmettre, communiquer   

1) To give, convey, or grant from or as if from a store.
2) To communicate the knowledge of; disclose.

M.E., from O.Fr. impartir, from L.L. impartire "to share in, divide with another, communicate," from assimilated form of → in- "into, in" + partire "to divide, → part."

Darpârdan, from dar-, → in-, + pâr, → part, Mid.Pers. pârag "part, portion; gift, offering;" Av. pāra- "debt," from par- "to remunerate, equalize; to condemn;" PIE *per- "to sell, hand over, distribute; to assign;" + -dan infinitive suffix.

impedance
  پاگیری   
pâgiri (#)

Fr.: impédance   

General: The ratio of a quantity with the nature of a force to a related quantity with the nature of a current.
Electricity: The apparent opposition in an electrical circuit to the flow of an alternating current that is analogous to the actual electrical resistance to a direct current and that is the ratio of effective electromotive force to the effective current

From impede, from L. impedire "to entangle," literally "to shackle the feet," from in- "in" + pes (gen. pedis) "foot" + -ance a suffix used to form nouns either from adjectives in -ant or from verbs.

Pâgiri, verbal noun of pâgir "impedder, impeded; hinderer, hindered," from "foot, step" (from Mid.Pers. pâd, pây; Av. pad- "foot;" cf. Skt. pat; Gk. pos, gen. podos; L. pes, gen. pedis; P.Gmc. *fot; E. foot; Ger. Fuss; Fr. pied; PIE *pod-/*ped-) + gir present stem of gereftan "to take, seize" (Mid.Pers. griftan, Av./O.Pers. grab- "to take, seize," cf. Skt. grah-, grabh- "to seize, take," graha "seizing, holding, perceiving," M.L.G. grabben "to grab," from P.Gmc. *grab, E. grab "to take or grasp suddenly;" PIE base *ghrebh- "to seize").

imperare (L.)
  پرماتیدن   
parmâtidan

Fr.: inperare (L.)   

Latin verb meaning "to command, rule, reign."

L. imperare "to command, give orders, exercise authority," from → in- "into, in" + parare "to make ready, supply, order," related to parire "produce, give birth to," from PIE root *pere- "to produce, procure;" cf. Skt. prthukah "child, calf, young of an animal;" Gk. poris "calf, bull;" Czech spratek "brat, premature calf;" Lith. periu, pereti "to brood;" O.H.G. farro, Ger. Farre, Du. varre "bull," O.E. fearr "bull;" see below for possible Iranian cognates.

Parmâtidan, from BMP plm'(d)y "to command, order," Sogd. framat- "to command," variants of farmudan, farmâyidan "to command, to order," ultimately from prefixed Proto-Ir. *fra-maH-, from *maH- "to measure," → experiment.

imperative
  ۱) پرماته؛ ۲) پرماتی   
1) parmâte; 2) parmâti

Fr.: 1) inpératif; 2) impériux   

1a) A command or order.
1b) → imperative case.
2a) Absolutely necessary or required; extremely important.
2b) Of the nature of or expressing a command; commanding.

From L.L. imperativus "pertaining to a command," from imperat-, p.p. stem of → imperare "to command."

Parmât, noun from present stem of parmâtidan, → imperare; parmâtii, adj. from parmât.

imperative case
  کاته‌ی ِ پرماتی، ~ فرمانی   
kâte-ye parmâti, ~ farmâni

Fr.: cas impératif   

The grammatical mood of a verb that expresses a command or a request, as in close the door!.

imperative; → case.

imperatively
  پرماتانه   
parmâtâne

Fr.: inpérativement   

In an imperative manner.

Adverb from → imperative; → -ly.

imperfect
  نافرساخته، نافرساخت   
nâfarsâxté; nâfarsâxt

Fr.: imperfection   

Not perfect; faulty or incomplete.

in-; → perfect.

imperfection
  نافرساختگی، نافرسازش   
nâfarsâxtegi, nâfarsâzeš

Fr.: imperfection   

A fault, flaw, or undesirable feature; the state or condition of being imperfect.

in-; → perfection.

imperial
  پرماتیاری، پرماتگانی، شاهی، شاهانه، شاهنشاهی   
parmâtyâri, parmâtgâni, šâhi, šâhâne, šâhanšâhi

Fr.: impérial   

Of, relating to, or suggestive of an empire or a sovereign, especially an emperor or empress (TheFreeDictionary).

Adjective of → empire.

imperialism
  پرماتگانداری، امپریالیسم   

Fr.: impérialisme   

1) The extension of a nation's authority by territorial acquisition or by the establishment of economic and political dominance over other nations.
2) A political doctrine or system promoting such extension of authority (TheFreeDictionary.com).

imperial; → -ism.

implication
  درتاهش   
dartâheš

Fr.: implication   

1) General: Something implied; the act of implying.
2) A statement that follows from other given statements. For ex., an implication of x = -1 is that x2 = 1.
3) A proposition found from two given propositions by connecting them in the form "If ..., then ...". The first statement is the antecedent (or hypothesis) and the second the consequent (or conclusion).

From L. implicationem "interweaving, entanglement," from implicatus, p.p. of implicare "involve, entangle, connect closely," from → in- "in" + plicare "to fold," → explain.

Dartâheš, verbal noun of dartâhidan "to imply," from dar-, → in- + tâhidan "to fold, ply," → explain.

implicit
  درتاهی   
dartâhi

Fr.: implicite   

1) General: Implied, rather than expressly stated.
2) Math.: → implicit function.

From L. implicitus, variant of implicatus, p.p. of implicare, → implication.

Dartâhi, from dartâh present stem of dartâhidan, → implication, + -y adj. suffix.

implicit function
  کریای ِ درتاهی   
karyâ-ye dartâhi

Fr.: fonction implicite   

A function which contains two or more variables that are not independent of each other. An implicit function of x and y is one of the form f(x,y) = 0, e.g., 4x + y2 - 9 = 0. See also → explicit function.

implicit; → function.

<< < -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 arc Arg ari art ass ast ast ast atm ato att Aur aut axi azi bac Bal Bar Bar Bay Bec Ber bet bic bij bin bio Bir bla Bla blu blu bol Boo bou bra Bre bro bug C r cal Cal can car Car Cas cat cau 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 Cop Cor cor cor cos cos Cou cou cow cre cri cro cry cur cut Cyg dam dar dat de deb dec dec ded def deg del dem den dep des det dev dia dif dif dig dio Dir dis dis dis dis dis dis div don dou dow dro dur dwa dyn Dys ear ebb ecl edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ Equ esc eth Eur eve exa exc exe exi exp exp ext ext eye fac fal Far fed fer fer fie fin fir fit fla flo flu fol for for Fou fra fre Fre fro fuz gai Gal Gal gam gas Gau gen gen geo geo geo gia glo gol gra gra gra gra gre gri gui H I hai Ham har Hau hea hec hel hel her HES hie hig his hom hor hot Hub hum Huy hyd hyd hyl hyp ice ide ima imp imp imp inc ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iro irr iso iso ite jel Jou Jup kao Kep kil Kip Kra Lag Lam lan lar las law lea leg Leo lex lig lim lin lin lin lit Loc loc log Lor low lum lun lun Lym mac mag mag mag mag mag mai Mal mar mas mas mat max mea mec meg men mer met met met mic mic Mik min min mis mob mod mol mon moo mou mul mul mys nan Nat nau nec neo neu nev New NGC no nom non non nor not nuc nuc num nut obj obs obs occ odd OH Ome Oor ope opp opt opt orb ord ori ort osc out ove oxi pai Pan par par par par pas pea pen per per per per Per per pha phl pho pho pho pi pip Pla pla pla pla ple poa pol Pol pol pol pop pos pos pot pra pre pre pre pri pri pri pro pro pro pro pro pro pro Pto pul puz 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 Rhe rid rig ris Roe Ros rot rub rut Sag sam sat sca sca Sch sci sea sec sec see sel sem sen ser Sh2 sha shi sho sid sig sim sin Sir ske sli Smo soc sol sol sol sol sol 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 unp upp urg V20 Van var veg vel ver vib vio vir vis Vol Vul wan wat wav WC4 wea wel whi Wil wis WNL wor X-r Yer Z s zer [C > >>