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: 13176 Search : in
decimal system
  راژمان ِ دهدهی   
râžmân-e dahdahi

Fr.: système décimal   

same as → decimal number system.

decimal; → number; → system.

decimetric wave
  موج ِ دسی‌متری   
mowj-e desimetri (#)

Fr.: onde décimétrique   

An electromagnetic radio wave having wavelengths between 10 cm and 1m, corresponding to a frequency between 300 and 3,000 Mega Hertz. It is naturally emitted by various astronomical objects.

Decimetric, from → deci- + from Fr. métrique, → metric; → wave.

Mowj, → wave; desimetri, from décimétrique, as above.

decision
  واسون   
vâsun

Fr.: décision   

The act or process of deciding. → rule of decision.

Verbal noun of → decide.

decisive
  واسونمند   
vâsunmand

Fr.: décisif   

Having the power or quality of deciding; putting an end to controversy; crucial or most important (Dictionary.com).

decide; → -ive.

declaim
  وازوییدن   
vâzuyidan

Fr.: déclamer   

To speak aloud in an oratorical manner; make a formal speech (Dictionary.com).

de-; → claim.

declaration
  روناگش   
runâgeš

Fr.: déclaration   

The act of declaring; announcement.
2) Something that is announced or proclaimed.

Verbal noun of → declare.

declare
  روناگیدن   
runâgidan

Fr.: déclarer   

1) To make known or state clearly, especially in explicit or formal terms.
2) To announce officially; proclaim (Dictionary.com).

M.E. declaren, from O.Fr. declarer "explain, elucidate," from L. declarare "make clear, reveal, disclose, announce," from → de- intensive prefix + clarare "clarify," from clarus, → clear.

From Kurd. (Sorani) rûnâk, runâg "clear, bright," rûn "bright, clear," rûn kirdin "to explain," variants of rowšanâ, rowšan, rušanâ, → bright, → day.

declension
  واکیله   
vâkilé

Fr.: déclinaison   

The → inflection of nouns, pronouns, or adjectives for case, number, and gender.

M.E. declenson, declynson (with suffix later assimilated to -sion), from O.Fr. declinaison, from L. declinatio, → declination

declination.

declination
  واکیلش   
vâkileš

Fr.: déclinaison   

1) Angular distance (symbol δ) from the celestial equator. One of the coordinates, with → right ascension, that defines the position of a heavenly body in the equator system. Declination is measured positively (+) north or negatively (-) south of the celestial equator from 0° to 90°.
2) Angle between geographic North and magnetic North (symbol D).

Verbal noun of → decline; → -tion.

declination axis
  آسه‌ی ِ واکیلش   
âse-ye vâkileš

Fr.: axe de déclinaison   

The axis to which the telescope tube is fastened in an → equatorial mounting.

declination; → axis.

declination circle
  پرهون ِ واکیلش، دایره‌ی ِ ~   
parhun-e vâkileš, dâyeré-ye ~

Fr.: cercle de déclinaison   

For a telescope with an → equatorial mounting, a graduated circle attached to the → declination axis that shows the → declination to which the telescope is pointing.

declination; → circle.

decline
  ۱) واکیلیدن؛ ۲) واکیل   
1) vâkilidan; 2) vâkil

Fr.: décliner, se décliner   

1a) To bend down; slope downward; descend.
1b) Grammar: To → inflect according to the various cases of a noun, adjective, or pronoun.
2) The process of declining; a downward movement; gradual loss or deterioration.

M.E. declinen, from O.Fr. decliner "to sink, decline, degenerate, turn aside," from declinare "to turn away, inflect," from → de- + clinare "to bend," cf. Gk. klinein "to cause to slope, slant, incline," Skt. sri- "to lean," O.Pers. θray-, Av. sray- "to lean," Mod.Pers. kil "bent, inclined, slant," PIE base *klei- "to lean, incline" from which is also derived (Ger. lehnen, E. lean).

Vâkil, from prefix vâ- "away" + kil "bent, crooked, inclined" [Dehxodâ], Mid.Pers. xwahl "bent, crooked" (Mod.Pers. dialectal/colloquial variants kowleh, cowleh, cowl, caval, xohl, xohal, hol), cf. Skt. kûla- "slope, declivity;" PIE base *klei-, as above. → inclination

decode
  وارمزاندن، رمز‌برداشتن   
vâramzândan, ramz bardâštan

Fr.: décoder   

To convert encoded symbols so that they can be used by the computer or understood by a person. See also → encode and → decrypt.

de-; → code.

Vâramzidan, from vâ-, → de-. Ramz bardâštan, from ramz, → code, + bardâštan "to remove, to take," from bar- "on; up; upon; in; into; at; forth; with," → on-, + dâštan "to have; to hold; to posses," → property.

decoder
  وارمزانشگر   
vâramzânešgar

Fr.: décodeur   

An electronic device that converts audio or video signals into a different form that can be heard or seen correctly.

decode; → -er.

decoding
  وارمزانش، رمزبرداری   
vâramzâneš, ramz bardâri

Fr.: décodage   

The process of translating data or a message from a code into the original language or form. See also → encoding and → decryption.

decode; → -ing.

decompose
  واهمنهادن   
vâhamnehâdan

Fr.: décomposer   

Of a physical force or entity or chemical substance, to separate or break into constituent parts or elements.

From → de- + → compose.

decomposition
  واهمنهش   
vâhamneheš

Fr.: décomposition   

The process or the state of breaking down a physical entity or an organic material.

From → de- + → composition.

decompress
  واتنجیدن   
vâtanjidan

Fr.: décomprimer   

To cause to undergo → decompression.

de- + → compress.

decompression
  واتنجش   
vâtanješ

Fr.: décompression   

1) A gradual decrease in surrounding → pressure, especially the controlled decrease in pressure that divers undergo after working in deep water or breathing compressed air.
2) Computers: The restoration of compressed electronic data to their full size.

de- + → compression.

deconvolution
  واهماگیش   
vâhamâgiš

Fr.: déconvolution   

A mathematical operation that allows to restore the original input signal, such as an astronomical image or spectrum, to its state before being affected by the → atmospheric turbulence and the → transfer function of the instrument. → convolution.

From → de- + → convolution.

<< < -es -it -sc 201 951 abe abs abs aca acc acc aco act ada adh ado aer aft air Alf alg alk alp Alt alt amb ana And ang ani ann ant ant ant apo app app Apu arc arg Arn art ass ast ast ast atm ato att aur aut avo azi bac bal bar bar bat Bea Bel bet bia big bin bio Bir bla bla blo Blu bol Boo bou box bre Bri bro bur cal cal Can cap car Car cat cau cel cen cen cha Cha cha che Chi chr cir cir civ cla clo clo CMB 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 con coo cor cor cor Cos cos cos cou cou cra cri cro cry cul cur cyc D l dar dat day dea dec dec dec def def deg Del Den dep der det deu dew dic dif dif dil dip dir dis dis dis dis dis diu dog Dop dou Dra Dsc dus dwa dyn Dys Ear ecc eco edg egg Ein Ela ele ele ele ele ell eme emp enc eng ent epi equ equ equ eru eth Eur eve exa exc exe exi exo exp ext ext ext fab fai Fan fea fem fer fie fil fir fir fla fli flu foc for for for fra fre fre fri fun fuz gal gal gal Gam gau Gau gen geo geo geo geo Gib glo gov gra gra gra gra gre gro Gui H-a hal Ham har Hay hea hei hel Hel her het hie hig hoa hom hor hot Hub Hug hur hyd hyd hyl hyp ice ide ima ima imp imp inc inc ind ine inf inf inf ing inn ins ins int int int int int int int int inv inv ion iro Isl iso iso Jab jet Jov Jup Kar Kep kil Kip Kra Lag Lam Lan Lar las law lea Leg Leo lev lig lim lin lin lin lit loc loc log Lor low lum lun lun Lym Mac mag mag mag mag mag mai Mal map mas mas mat Mau mea mea med Men mer Mes Met met mic mic Mie mil min Mir mix mod mol mom Moo mor mov mul mur n-b nan nat nea neg Ner neu new New NGC noc nom non non nor nor nuc nuc nul nut obj obl obs occ oct off old one ope opp opt opt orb ord org Ori osc oth ove Owl P-s Pal par par par par Pas pat pec pen per per per per per Pha 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 pyc 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 ren res res res res ret rev Ric rig rin roc roo rot rot rur S5- Sal sat sca sca Sch sci Scu sec sec sed sel sel sem seq set sha she sho sid sie sil sim sin sit sky slo sno sod sol sol sol sol son sou spa spa spe spe spe spe sph spi spo squ sta sta sta sta ste ste ste Sti sto str str sub sub sub sul sup sup sup sup sur sur syl syn sys tal Tay tel ten ter tex the the the the Tho thr tid tim Tit too Tor tra tra Tra tra Tra tri Tri tru tub tur two Typ ult ult unc uni uni uni upl 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 > >>