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: 13070 Search : far
osmium
  اسمیوم   
osmiom

Fr.: osmium   

A very hard, brittle metal belonging to the → platinum group elements; symbol Os. → Atomic number 76, → atomic weight 190.2, → melting point 3,045 °C, → boiling point 5,027 °C, → specific gravity 22.57 at 20°C. It was discovered in 1803 simultaneously with → iridium in a crude → platinum ore by the English chemist Smithson Tennant.

From Gk. osme "smell" because of the sharp odor of the volatile oxide.

osmosis
  تراران   
tarârân

Fr.: osmose   

The process by which solvent molecules pass through a partially permeable membrane from a dilute solution into a more concentrated solution, thus equalizing the concentrations of materials on either side of the membrane. → permeability.

Extracted from Fr. endosmose "endosmosis" and exosmose "exosmosis," from Gk. prefixed osmos "a thrusting, a pushing," from othein "to push, to thrust;" cf. Av. vādāiiôit "breaks through, hunts," vadah- "wedge;" Mod.Pers. guvah, gavah "wedge;" Skt. vadh- "to slay, kill," vadha- "killer."

Tarârân, literally "pushing across," from tarâ-, → trans-, + rân present stem of rândan "to push, drive, cause to go," causative of raftan "to go, walk, proceed" (present tense stem row-, Mid.Pers. raftan, raw-, Proto-Iranian *rab/f- "to go; to attack").

osmotic pressure
  فشارِ ترارانی   
fešâr-e tarârâni

Fr.: pression osmotique   

The hydrostatic pressure produced on the surface of a partially permeable membrane by osmosis.

osmotic; → pressure.

Ostriker-Peebles criterion
  سنجیدار ِ استرایکر-پیبلس   
sanjidâr-e Ostriker-Peebles

Fr.: critère d'Ostriker-Peebles   

An approximate empirical criterion for the stability of a → galactic disk against its collapse to form a bar. The disk is stable if the following relation holds: T/|W| < 0.14, where T is the rotational → kinetic energy and |W| is the absolute value of the gravitational → potential energy. While the → Toomre criterion applies only to small linear perturbations, the Ostriker-Peebles criterion describes global modes.

Ostriker & Peebles, 1973, ApJ 186, 467; → criterion.

other
  ۱) دیگر؛ ۲) ناخودی کردن، دیگریدن   
1) digar (#); 2) nâxodi kardan, digaridan

Fr.: autre   

1a) Being the one (as of two or more) remaining or not included.
1b) Being the one or ones distinct from that or those first mentioned or implied.
1c) Not the same; different.
1d) Additional.
2) To treat or consider (a person or a group of people) as alien to oneself or one's group (as because of different racial, sexual, or cultural characteristics)

M.E., from O.E. ôther; related to O.Saxon athar, O.Norse annarr, Du. ander, O.H.G. andar, Ger. ander, ultimately from PIE *an-tero- (cf. Lith. antras, O.Prussian anters.

Digar "another, other," from Mid.Pers. dit, ditikar "the other, the second," O.Pers. duvitiya- "second," Av. daibitya-, bitya- "second," Skt. dvitiya- "second," PIE *duitiio- "second."

othering
  دیگرش، ناخودیکرد   
digareš, nâxodikard

Fr.:   

An action by which an individual or group becomes classified in somebody's mind as "not one of us". See also: → in-group, → out-group.

other; → -ing.

otherness
  دیگری؛ ناخودی‌بود   
digari; nâxodibud

Fr.:   

Characteristic of the Other.

other; → -ness.

out
  برون، اُس-   
borun, os-

Fr.: hors   

Away from, or not in, the normal or usual place, position, state, etc.

O.E. ut; (cf. O.N., O.Fris., Goth. ut, Du. uit, Ger. aus; PIE base *ud- "up, up away" (cf. Pers. os-, as below; Gk. hysteros "the latter;" L. usque "all the way to, without interruption;" O.Ir. ud- "out;" Rus. vy- "out").

Borun, variant birun "out, the outside," from Mid.Pers. bêron, from "outside, out, away," variant bêg, as in bêgânag (cf. Sogh. bêk "out, outside, apart, except," bêk-dênê "heretic," literally "out of religion") + rôn "side, direction;" Av. ravan- "(course of a) river").
Os-, from Mid.Pers. us-, uz-; Av. uz-, us- "out of, outside, from;" O.Pers. ud- (ud-apatatā "to rise up, rebel"), also Pers. preposition az "from; of; out of," prefixes zo- (in zodudan "to polish, clean;" Mid.Pers. uzdâtan; Av. uzdā-, from uz- + dā- "to make, create"), âz- (âzmâyeš, → experiment), haz- (haziné "cost, expenditure;" Mid.Pers. uzên, uzênak, from *uz-ayana- "going out;" Av. us- + ay- "to go" (→ assembly); PIE *ud- "up, out," cf. Skt. úd "up, away, out;" E. out, as above.

out of phase
  نافاز، ناهم‌فاز   
nâfâz, nâ-ham-fâz

Fr.: déphasé   

The condition of two oscillators that have the same frequency but different phases. Opposed to → in phase.

out; → phase.

out-group
  ناخودی   
nâxodi (#)

Fr.:   

A group to which the speaker, the person spoken of, etc. does not belong.

out; → group.

Nâxodi, opposite of xodi "in-group," from nâ- "not," → un-, + xodi, → in-group.

outburst
  ا ُسبلک   
osbelk

Fr.: sursaut   

1) A fairly brief period of unusually strong gas and/or dust production from a comet nucleus.
2) A brief period of enhancement of emission from a star, a quasar, etc.

out; → burst.

outburst decay
  تباهی ِ اسبلک   
tabâhi-ye osbelk

Fr.:   

A phase in the → light curve evolution of eruptive objects such as → dwarf novae, → Soft X-ray Transients, and transient → magnetars which follows the characterized sudden increase in their flux (over a factor ~ 1000 over the quiescent level). Outburst decay is slow and lasts months or years.

outburst; → decay.

outcome
  برونشد   
borunšod (#)

Fr.: issue, résultat   

A final product or end result; consequence; issue (Dictionary.com).

out; → come.

Borunšod "outcome," from borun, → out, + šod, šodan "to go, to pass, to change," → become.

outcrop
  برونزد   
borunzad (#)

Fr.: affleurement   

Emergence of a particular rock-body, e.g. a stratium or vein, at the ground surface. Outcrops can be formed naturally or by human action. Stream erosion and highway construction can produce outcrops.

Noun use of crop out, from crop, from M.E., O.E. cropp "bird's craw," also "head or top of a sprout or herb;" → out.

Borunzad, literally "strike out," from borun, birun, → out, + zad, zadan "to strike, beat," from Mid.Pers. zatan, žatan; O.Pers./Av. jan-, gan- "to strike, hit, smite, kill" (jantar- "smiter"); cf. Skt. han- "to strike, beat" (hantar- "smiter, killer"); Gk. theinein "to strike;" L. fendere "to strike, push;" Gmc. *gundjo "war, battle;" PIE *gwhen- "to strike, kill."

outer
  بیرونی   
biruni (#)

Fr.: externe   

Being or located on or toward the outside; external.

out + -er suffix of comparative degree of adjectives.

external.

outer core
  مغزه‌ی ِ بیرونی   
maqze-ye biruni

Fr.: noyau externe   

The upper zone of the → Earth's core, just below the → mantle, extending from a depth of about 2900 km to 5100 km. It is presumed to be → liquid because it sharply reduces → compressional wave velocities and does not transmit → shear waves. Its density is from 9 to 11 g/cm3. The → temperature ranges from 4400 °C in the outer areas to 6100 °C near the → inner core. Since shear waves do not propagate through a fluid, the Earth's outer core is considered to be liquid because the shear wave velocity is zero. Convection motion within the outer core, along with the rotation of the Earth creates an effect that maintains the Earth's → magnetic field.

outer; → core.

outer Lindblad resonance (OLP)
  باز‌آوایی ِ لیندبلاد ِ برونی   
bâzâvâyi-ye Lindblad-e boruni

Fr.: résonance de Lindblad externe   

A → Lindblad resonance expressed by: Ωp = Ω + κ/m.

outer; → Lindblad resonance.

outer planet
  سیاره‌یِ بیرونی   
seyyâre-ye biruni (#)

Fr.: planète extérieure   

A planet that revolves around the Sun beyond the → asteroid belt, namely → Jupiter, → Saturn, → Uranus, and → Neptune.

out; → planet.

outer space
  فضا، برون-فضا، فضای ِ بیرونی   
fazâ, borun-fazâ, fazâ-ye biruni

Fr.: espace, espace extra-atmosphérique   

The space beyond the Earth's atmosphere.

outer; → space.

outflow
  ا ُستچان   
ostacân

Fr.: flot, écoulement   

The act of flowing out; a fluid that flows out; any outward movement. Opposite of → inflow.

out + → flow.

<< < -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 ash ass ast ast asy atm ato att aut aut axi Baa bal Bal bar bar bea beh Bes bia big bin bin bip biv bla bli blu Boh Bol Bos bou bra bri bro buo Cal cal Can cap car Car cat cat CCD Cen cen CGS cha cha che che chr cir cir cis cla clo clo clu 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 Cop Cor cor cor cos cos Cou cou cov cre cri cro cry cur cut Cyg DA dar dat de deb dec dec ded def def dei dem den dep des det dev dia dif dif dig Dio Dir dis dis dis dis dis dis div dom dou dow dri dur dus dyn dyn ear eav ecl Edd eff Ein Ekm ele ele ele ele ell emb emi enc ene ent eph equ equ equ eru eth eup eve EX exc exe exi exo exp ext ext ext fab fai far Fec fem fer fie fin fir fis fla flo flu foc for for Fou fra fre fre fro fun G r Gal gal gam gas Gau gel gen geo geo geo Gho gla goa gra gra gra gra gre Gre gro gyr had hal har har HD Hea Hel hel Her her hid 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 int inv ion iro ise iso iso ite jet Jou Jup kap 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 mar mas mas mat max mea mea med men mer Mes met met mic Mic Mie Mil min mis mJy mod mol mon moo mot mul mul mut nad nas nat neb neg net neu New New nig Noe 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 osm out ove ozo pal pan par par par par pat pec pen per per per per per Pfu pha pho pho pho phy pie Pit Pla pla pla pla ple Poi pol pol pol pol pop 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 rai ran Ras Ray rea rec rec rec red red ref reg reg rel rel rel rep res res res res Reu rhe Rie rig ris Roe Ros rot Rud ryd Sag sam sat sca sca Sch sci Sea sec sec see sel sem sen ser Sey Sha she sho sid sig sim sim sin ske sle smo Sob sof sol sol sol sol sou Sou spa Sp spe spe spe sph spi spi spr squ sta sta sta sta ste ste ste Sto Str str str sub sub suc sun sup sup sup sup sur swa syn syn tab tar tek tem ter tes the the the the Tho thr tid tim Tis Too Tor tra tra Tra tra tra tri tri tru Tul tur two Typ ult un- und uni uni unk upp Urc utt val var vec vel ver ver vin vir vis Vog von wal wat wav wax wea wei Whi wil win WN7 wor X-r Yar You zer zod > >>