An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer AGB air Alf Alg all alp alt AM amo ana And ang ani ano Ant Ant apa apo app app Ara arc Ari arr Asi ass ast ast asy atm ato att aut ave axi Bab bal ban bar bar bea Bel Bes bia Big bin bin bip Bla bla bli blu Boh Bon bos Bou bra bri bro bur cal cal can Cap car Car cat Cau cea 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 coo cop Cor CoR cor cos cos Cou cou CP- cre cri cro cub cur cya Cyg dan dar dau de- deb dec dec dee def deg del den den dep des deu dew dia dif dif dih dip dir dis dis dis dis dis diu doc dop dou DQ dry dus dwa dyn Dys 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 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 Hul Huy hyd hyd hyl hyp ice ide ima imm imp imp inc ind ind ine inf inf inf inh inn ins ins int int int int int int int int inv ion ion Irr iso iso iso Jal JHK Jul jur Kel Kep kin kne L d Lag lam Lap lar lat law Lea len lep lib lig lin lin lin liq lit loc log lon Los low lum lun Lut Lyr mac mag mag mag mag mag maj man Mar mas mas mat Max mea mec mel Mer Mes met met met mic mid Mil min mir mix mod mod mol mon mor mov mul muo mys nan nat Nav nec nep neu new New NGC Noa nom non non nor not nuc nuc num nyc obj obs obs oce odd OH Omi Oor ope opt 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 phy Pip Pla pla PLA pla ple plu pol pol pol pol pop pos pos pot Pra pre pre pre pre pri pri pro pro pro pro pro pro pro pse pul pur qua qua qua qua qui rad rad rad rad rad rad raf ran rar ray rea rea rec rec red red ref ref reg rel rel rel rep res res res res ret rev ric rig rin roc ROS rot Rox rus Sad sal sat sca sca Sch sci scy sec sec see sel sem sen Ser sex Sha she sho sid sig sil sim sin siz sle SMA SNR Sof sol sol sol sol sou Sou spa Sp spe spe spe sph spi Spi spr sta sta sta sta sta ste ste ste sto str str Sty sub sub suc sun sup sup sup sup sur Swa syn syn tac tas tel tem ter tes the the the the Tho thr tid tim Tit top tot tra tra TRA tra tre tri tri tru tum tur TY Typ ult una 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 ytt zer zon > >>

Number of Results: 13046 Search : far
amount
  مساک   
masâk

Fr.: quantité   

Quantity; measure; the sum total of two or more quantities or sums.

From M.E. amounten "to ascend," from O.Fr. amonter, from amont "upward," from L. ad montem "to the hill," from ad "to" + mons, mont "hill," → mountain.

Masâk, from Mid.Pers. masâk "size, amount, magnitude," from mas "great, large," Av. masan "greatness, importance," from mas-; maz- "long, large; great"; cp. Skt. maha "great, mighty" (Mod.Pers. meh "great, large"), Gk. megas "great, large" L. magnus "great," PIE *meg- "great".

ampere
  آمپر   
âmper (#)

Fr.: ampère   

The → SI unit of → electric current; symbol A. It is defined by taking the fixed numerical value of the → elementary charge, e, to be 1.602 176 634 × 10-19 when expressed in the unit → coulomb (C), which is equal to A s, where the → second (s) is defined in terms of ΔνCs.

Named after the French physicist and mathematician André-Marie Ampère (1775-1836), one of the pioneers in studying electricity, who laid the foundation of electromagnetic theory.

Ampere's law
  قانون ِ آمپر   
qânun-e Âmper

Fr.: loi d'Ampère, théorème ~   

One of the basic relations between → electricity and → magnetism, stating quantitatively the relation of a → magnetic field to the → electric current or changing electric field that produces it. Ampere's law states that the line integral of the magnetic field around an arbitrarily chosen path is proportional to the net electric current enclosed by the path. Also known as Ampère's theorem, Ampère's circuital law.

ampere; → law.

amplification
  دامنه‌دهی، دامنه‌گیری   
dâmane-dehi, dâmane-giri (#)

Fr.: amplification   

1) General: The act or result of amplifying, enlarging, or extending.
2) Physics: The process of increasing the magnitude of a variable quantity, especially the magnitude of voltage, power, or current, without altering any other quantity.

Verbal noun of → amplify.

amplification factor
  کروند ِ دامنه‌دهی   
karvand-e dâmane-dahi

Fr.: facteur d'amplification   

1) Electronics: The extent to which an → analogue → amplifier boosts the strength of a → signal. Also called → gain.
2) In → gravitational lensing, the ratio of the lensed brightness to unlensed brightness. This factor depends on the mass of the → lensing object and the closeness of the alignment between observer, lens, and source (→ impact parameter).

amplification; → factor.

amplifier
  دامنه‌ده   
dâmane-deh

Fr.: amplificateur   

Device for reproducing an electrical input at increased intensity.

Agent noun of → amplify.

amplify
  دامنه‌دادن، دامنه‌گرفتن   
dâmané dâdan, dâmané gereftan (#)

Fr.: amplifier   

General:To make larger, greater, or more powerful.
Physics:To increase the amplitude of an input signal.

From M.F. amplifier, from L. amplificare "to increase, augmant," from L. amplus "wide, large."

Dâmané, → amplitude; dâdan "to give" (Mid.Pers. dâdan "to give," O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives;" Skt. dadáti "he gives," Gk. didomi "I give," tithenai "to put, set, place;" L. dare "to give, offer;" Rus. delat "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do"); gereftan "to take, seize, catch," (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").

amplitude
  دامنه   
dâmané (#)

Fr.: amplitude   

General:The greatness, size, or extent of something.
In any periodically varying function, the maximum absolute value of the quantity.
The magnitude range of a variable star.

L. amplitudo "wide extent, width," from amplus "large".

Dâmané "the foot or skirt of a mountain," from dâman "skirt."

an-
  ا-، ان-؛ بی-؛ نا-   
a- (#), an- (#); bi- (#); nâ- (#)

Fr.: an-   

Prefix same as → a- "not, without" occurring before a vowel or h in loanwords from Greek.

a-.

ana-
  آنا-   
ânâ- (#)

Fr.: ana-   

Prefix meaning: 1) up, upward (anode); 2) back, backward (ananym); 3) again, anew (anagenesis); 4) exceedingly (anamorphism).

From Gk. ana- "up, on, upon, throughout, again," cognate with Av. ana "on, over, along," O.Pers. anâ "throughout," O.E. on; PIE base *ano- "on, upon, above".

Ânâ-, from ana, anâ, Av. and O.Pers. counterparts of Gk. ana-, as above.

analemma
  هورپیچک   
hurpicak

Fr.: analemme   

The shape resembling a figure of 8 obtained by following the Sun's position in the sky at the same time of day throughout the year. It is a graphical presentation of the → equation of time. Because the Earth's orbit around the Sun is elliptical, the two loops of analemma have different sizes. Analemma figures for different latitudes or different times of day would appear slightly different. The analemma is widest in the period when the Earth is closest to the Sun (December). This is because in this situation the Earth advances in its orbit faster due to the stronger gravitational attraction of the Sun. On the other hand, since the Earth rotates at a constant rate, the Sun appears to rise earlier than average because the Earth advances further in its orbit in one day when the Earth is close to the Sun. The opposite occurs in June when the Earth is further from the Sun.

From L. analemma "the pedestal of a sundial," hence the sundial itself, from Gk. analemma "prop, support," from analambanein, from → ana- "up" + lambanein "to take".

Hurspicak from hur "Sun;" Av. hvar- "sun" (cf. Skt. surya; Gk. hlios; L. sol; O.H.G. sunna; Ger. Sonne; E. sun; PIE *sawel- "sun") + picak "a curled, a twisted figure or object," from picidan "to twist, invove, enttwine, coil."

analog-to-digital converter
  هاگردگر ِ آناگویه-رقمی   
hâgardgar-e ânâguyé-raqami

Fr.: convertisseur analogique-numérique   

In electronics, a device that converts the analog signal to → analog-to-digital units or counts.

analogue; → digital; → converter.

analog-to-digital unit (ADU)
  یکای ِ آناگویه-رقمی   
yekâ-ye ânâguyé-raqami

Fr.: unité analogue-numérique   

A number that represents a → charge-coupled device (CCD)'s output and is proportional to the → electron charge created by the → photons, plus the constant → bias offset. The relationship between the ADUs generated and the number of electrons acquired on the CCD is defined by the → CCD gain. Intensities given in ADUs provide a convenient method for comparing images and data generated by different cameras. Also referred to as → count and digital number. In most cases, the analog signal is digitalized by an analog-to-digital (A/D) converter and fed into a computer where further manipulation and analysis are done on what the detector originally produced from the star's photons (Howell, S.B., Handbook of CCD Astronomy, Cambridge Univ. Press, 2000).

analogue; → digital; → unit.

analogical
  آناگوییک   
ânâguyik

Fr.: analogique   

Of, relating to, or based on analogy; expressing or implying analogy.

analogy + -i + → -al.

analogous
  آناگو   
anâgu

Fr.: analogue   

1) Similar or corresponding in some respect; having → analogy.
2) Biology: Similar in function but having different evolutionary origins, as the wings of birds and insects.
3) Chemistry: Similar in chemical properties and differing in chemical structure only with respect to one element or group.

L. analogus, from Gk. analogos "proportionate," → analogy.

analogue
  آناگویه؛ آناگو، آناگوییک   
ânâguyé; ânâgu, ânâguyik

Fr.: analogue, analogique   

1) (n.) Something that has → analogy to something else.
2) Chemistry: (n.) A chemical compound whose molecular structure is closely similar to that of another.
3) Relating to or using signals or information represented by a continuous variable physical quantity such as spatial position or voltage. Often contrasted with → digital.

From Fr. analogue, from Gk. analogon, → analogy.

analogue computer
  رایانگر ِ آناگوییک   
râyângar-e ânâguyik

Fr.: ordinateur analogique   

A computer in which data is stored and processed in the form of continually varying signals representing a physical quantity rather than in the form of individual numerical values. The simplest analogue computers are side rules, thermometers, voltmeters, and speedometers.

analogue; → computer.

analogy
  آناگویی   
ânâguyi (#)

Fr.: analogie   

1) A similarity or comparability between two things.
2) Math.: A general similarity between two problems or methods. Analogy is used to infer new theorems from existing ones. Hypotheses based on analogy must still be proved.
3) Logic: A form of reasoning which asserts that if two or more entities are similar in one or more respects, then they would be similar in other respects.
4) Biology: An analogous relationship.
5) Linguistics: The process by which a word or form is either created or changed according to existing patterns in the language.

M.E., from O.Fr. analogie or directly from L. analogia, from Gk. analogia "proportion," from → ana- "upon, according to" + logos "ratio; word, speech, reckoning," → -logy.

analysis
  آنالس، آناکاوی   
ânâlas, ânâkâvi

Fr.: analyse   

1) General: The separation of an intellectual or material whole into its constituent parts for individual study. The study of such constituent parts and their interrelationships in making up a whole (opposite of → synthesis).
2) Chemistry: The separation of a substance into its constituent elements to determine either their nature (qualitative analysis) or their proportions (quantitative analysis).
3) Mathematics: A branch of mathematics principally involving → differential and integral calculus, → sequences, and → series and concerned with → limits and → convergence.

From M.L. analysis, from Gk. analysis "a breaking up," from analyein "unloose," from ana- "up, throughout" + lysis "a loosening," from lyein "to loosen, release, untie". The L. cognate and counterpart of this Gk. word, i.e. luere has formed the words solve, dissolve, solution. The Skt. cognate lu, lunoti "to cut, sever, mow, pluck, tear asunder, destroy," lava "cutting, plucking; what is cut; fragment, piece;" PIE *leu- "to loosen, divide, cut apart". The Eng. lose, loose and Ger. los derive from this root.

Ânâlas, from ânâ-, → ana-, + las "loose" ([Mo'in], Gilaki, Tabari, Tâleši, Aftari). We do not know the Av./O.Pers. counterparts of these Gk. las, lysis, lyein, but we believe that las and the following words probably derive from the above-mentioned PIE *leu-:
"slit, cut" (Tabari),
lâb, lâp, lib "slit, cut, piece, half" (Tabari),
lâpé "a cut piece of wood" [Mo'in],
lâpé kardan "to cut a timber along its length" [Mo'in],
lap "piece, big piece, big cut" [Mo'in]. This word was chosen by Farhangestân I for "lobe of the lung".
lâc "open, wide-open" (Tabari),
luš "torn" [Mo'in], also luš luš [Mo'in] "in pieces,"
lat "torn, piece" [Mo'in]. Compare with luta "cut, cut off" in Pali. Lat may also be a contraction of laxt.
lok "torn, piece" (Qâyeni),
lâš "slit" (Tabari),
lâš kardan "to pick, to pluck" [Mo'in],
latu "plough" (Tabari).
Ânâkâvidan, from ânâ- + kâvidan (kâftan) "to examine, investigate, search; dig," from kâv + infinitive suffix -idan; compare with Mod.Pres. kâvâk "hollow, empty," L. cavus "hollow" (E. derivatives: cavity, concave, cave, excavate), Gk. koilos "hollow."

analytic
  آنالسی   
ânâlasi

Fr.: analytique   

Of or relating to analysis, in contrast with → synthetic. Also analytical.

M.L. analyticus, from Gk. analytikos, from analy-, → analysis, + -tikos, -tic, equivalent to → -ic.

Pertaining to ânâlas, → analysis.

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer AGB air Alf Alg all alp alt AM amo ana And ang ani ano Ant Ant apa apo app app Ara arc Ari arr Asi ass ast ast asy atm ato att aut ave axi Bab bal ban bar bar bea Bel Bes bia Big bin bin bip Bla bla bli blu Boh Bon bos Bou bra bri bro bur cal cal can Cap car Car cat Cau cea 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 coo cop Cor CoR cor cos cos Cou cou CP- cre cri cro cub cur cya Cyg dan dar dau de- deb dec dec dee def deg del den den dep des deu dew dia dif dif dih dip dir dis dis dis dis dis diu doc dop dou DQ dry dus dwa dyn Dys 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 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 Hul Huy hyd hyd hyl hyp ice ide ima imm imp imp inc ind ind ine inf inf inf inh inn ins ins int int int int int int int int inv ion ion Irr iso iso iso Jal JHK Jul jur Kel Kep kin kne L d Lag lam Lap lar lat law Lea len lep lib lig lin lin lin liq lit loc log lon Los low lum lun Lut Lyr mac mag mag mag mag mag maj man Mar mas mas mat Max mea mec mel Mer Mes met met met mic mid Mil min mir mix mod mod mol mon mor mov mul muo mys nan nat Nav nec nep neu new New NGC Noa nom non non nor not nuc nuc num nyc obj obs obs oce odd OH Omi Oor ope opt 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 phy Pip Pla pla PLA pla ple plu pol pol pol pol pop pos pos pot Pra pre pre pre pre pri pri pro pro pro pro pro pro pro pse pul pur qua qua qua qua qui rad rad rad rad rad rad raf ran rar ray rea rea rec rec red red ref ref reg rel rel rel rep res res res res ret rev ric rig rin roc ROS rot Rox rus Sad sal sat sca sca Sch sci scy sec sec see sel sem sen Ser sex Sha she sho sid sig sil sim sin siz sle SMA SNR Sof sol sol sol sol sou Sou spa Sp spe spe spe sph spi Spi spr sta sta sta sta sta ste ste ste sto str str Sty sub sub suc sun sup sup sup sup sur Swa syn syn tac tas tel tem ter tes the the the the Tho thr tid tim Tit top tot tra tra TRA tra tre tri tri tru tum tur TY Typ ult una 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 ytt zer zon > >>