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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Number of Results: 13176 Search : in
explosion
  اسکفت   
oskaft

Fr.: explosion   

The sudden and violent release of mechanical, chemical, or nuclear energy from a confined space which creates a heat wave that travels at → subsonic speeds. → detonation; → deflagration; → implosion.

Verbal noun of → explode.

explosive
  ۱) اسکفتاک؛ ۲) اسکفتی، اسکفتنده   
1) oskaftâk; 2) oskafti, oskaftandé

Fr.: explosif   

1) (n.) A chemical or compound that causes a sudden, almost instantaneous release of pressure, gas, heat, and light when subjected to sudden shock, pressure, high temperature, or applied potential.
2) (adj.) Pertaining to or of the nature of an → explosion.

From explos(ion), → explosion + → -ive.

Oskaftâk, from oskaft-, stem of oskaftan, → explode, + -âk noun suffix.

explosive nucleosynthesis
  هسته اندایش ِ اسکفتی   
hasté andâyeš-e oskafti

Fr.: nucléosynthèse explosive   

The explosive processes that are believed to occur in supernovae. Explosive carbon burning occurs at a temperature of about 2 × 109 degrees and produces the nuclei from neon to silicon. Explosive oxygen burning occurs near 4 × 109 degrees and produces nuclei between silicon and calcium in atomic weight.At higher temperatures, still heavier nuclei are produced.

explosive; → nucleosynthesis.

explosivity
  اسکفتندگی   
oskaftandegi

Fr.: explosivité   

1) The state or quality of being explosive.
2) A measure of the extent to which a material is explosive.

explosive; → -ity.

exponent
  نما   
nemâ (#)

Fr.: exposant   

Math.: A symbol or number placed above and after another symbol or number (called the base) to denote the power to which the latter is to be raised. Examples: n in the expresseion an; 3 in the expression 23.

From L. exponentem, pr.p. of exponere "put forth, explain," from → ex- "forth" + ponere "to put, to place."

Nemâ, agent noun of nemudan "to show, display," from Mid.Pers. nimūdan, from ne- "down; into;" O.Pers./Av. ni- "down; into," → ni-, + mun, Av. māy- "to measure," → display.

exponential
  نمایی   
nemâyi (#)

Fr.: exponentiel   

Of or expressed by a mathematical → exponent. → exponential curve, → exponential equation, → exponential function.

exponent + -ial, variant of → -al.

exponential curve
  خم ِ نمایی   
xam-e nemâyi (#)

Fr.: courbe exponentielle   

A curve that represents an → exponential function.

exponential; → curve.

exponential equation
  هموگش ِ نمایی   
hamugeš-e nemâyi

Fr.: équation exponentielle   

An equation in which unknowns appear as exponents. Examples: 23x + 1 = 32.

exponential; → equation.

exponential function
  کریای ِ نمایی   
karyâ-ye nemâyi

Fr.: fonction exponentielle   

A function in the form of y = bx defined for every → real number x, with positive base b > 1.

exponential; → function.

exponentially
  نماییوار   
nemâyivâr

Fr.: exponentiellement   

In an exponential manner.

exponential; → -ly.

export
  ۱) اسبرتیدن؛ ۲) اسبرت   
1) osbartidan; osbart

Fr.: export   

1a) To ship (commodities) to other countries or places for sale, exchange, etc.
1b) Computers: To save (documents, data, etc.) in a → format usable by another → software program.
2) The act of exporting (Dictionary.com).

From L. exportare "to carry out, bring out; send away,," from → ex- "away" + portare "carry."

Osbart "carrying away," from os-, → ex-, + bart variant of bord, bordan "to carry" (such as in dialects of Varzaneh barte, Nâin barte, Xonsâr birt, Esfahân bärten); Mid.Pers. burdan; O.Pers./Av. bar- "to bear, carry," barəθre "to bear;" Skt. bharati "he carries;" Gk. pherein; L. fero "to carry;" PIE base *bher- "to carry."

expose
  ۱، ۲) اسنهادن؛ ۲) نور دادن   
1, 2) osnehâdan; 2) nur dâdan (#)

Fr.: exposer   

1) To reveal, make known, make visible.
2) In imaging, to subject, as to the action of light, or other electromagnetic radiations.

M.E. exposen, from O.Fr. exposer "lay open, set forth," from L. exponere "set forth, lay open, exhibit," with contamination from poser "to lay, place" (→ position). doublet of expound.

1) Osnehâdan, from os-, → ex-, + nehâdan "to put, place," → position.
2) nur dâdan, from nur, → light + dâdan "to give," Mid.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives;" cf. Skt. dadáti "he gives;" Gk. didomi "I give;" L. dare "to give, offer;" PIE base *do- "to give."

exposé
  اسنه   
osneh

Fr.: exposé   

A formal exposition of facts.

From Fr. exposé, p.p. of exposer, "to → expose."

Noun from osnehâdan, → expose.

exposition
  اسنهش   
osneheš

Fr.: exposition   

1) The act of setting forth information or a viewpoint.
2) Public exhibition or show.

Verbal noun of → expose.

exposure
  ۱) اسنهش؛ ۲) نورداد   
1) osneheš; 2) nurdâd

Fr.: pose, exposition   

1) The act of exposing; the fact or state of being exposed, → expose.
2) In optics, the total radiant energy incident on a surface per unit area. It is equal to the integral over time of the radiant flux density.

Verbal noun of → expose.

exposure meter
  اسنهش-سنج، نورداد-سنج   
osneheš-sanj, nurdâd-sanj

Fr.: posemètre   

In photography, an instrument used to measure the intensity of light from a scene to be photographed and to indicate the camera lens and shutter settings required to expose the film correctly.

exposure; → meter.

exposure time
  زمان ِ اسنهش، ~ نورداد   
zamân-e osneheš, ~ nurdâd

Fr.: temps de pose   

The length of time during which the receiver is irradiated.

exposure; → time.

express
  زهاویدن   
zohâvidan

Fr.: exprimer   

1) To transform ideas into words; utter or state.
2) Math: To → transform into equivalent → terms. For example by → expanding or → factorizing an → expression. See also → suppress, → impress.

M.E. expressen, O.Fr. espresser "to press, squeeze out; speak one's mind," M.L. expressare, frequentative of exprimere "represent, describe," literally "to press out," from → ex- "out" + pressare "to press, push," from L. premere "to press, hold fast, cover, compress."

Zohâvidan, from zo- variant of os- "out," → ex-, + hâv, from Av. hau- "to press, squeeze out;" cf. Mid.Pers. hunîdan "to express, extract (juice)," hâwan "mortar;" akin to Skt. sav- "to press, press out;" O.H.G. sou, O.E. sēaw "juice;" + -idan infinitive suffix.

expression
  زهاوش   
zohâveš

Fr.: expression   

1) The act or an instance of expressing.
2) Math.: A statement using mathematical quantities such as → scalars, → variables, → parameters, → functions, and → sets, as well as → relational and → logical  → operators such as → equality, → conjunction, → existence, → union, etc. (Steven. G. Krantz, ed., Dictionary of Algebra, Arithmetic, and Trigonometry, 2001).

express; → -tion.

extend
  استنیدن   
ostanidan (#)

Fr.: étendre   

To stretch out; draw out to the full length; to enlarge the scope of; to increase the length or duration of.

From O.Fr. estendre, from L. extendere "stretch out," from → ex- "out" + tendere "to stretch," see below.

Ostanidan, from os-, → ex- + tanidan as in Av. ustāna- "stretched out" (ustāna-zasta- "with outstretched hands"), cf. Skt. uttāná- "stretched out, spread out." Mod.Pers. tanidan "to spin, twist, weave;" Mid.Pers. tanitan, from Av. tan- to stretch, extend;" cf. Skt. tan- to stretch, extend," tanoti "stretches," tantram "loom;" Gk. teinein "to stretch, pull tight;" L. tendere "to stretch;" PIE base *ten- "to stretch."

<< < -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 > >>