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: 12955 Search : far
intra-
  درون-، در-؛ فرو-   
darun- (#), dar- (#); foru- (#)

Fr.: intra-   

Prefix denoting: "inside, within; below." → intramolecular forces; → intermolecular forces; → intramercurian planet.

From L. intra "on the inside, within; during; below." Commonly opposed to → extra-.

Darun "in, into; within" (Mid.Pers. andarôn "inside," from andar, → inter-, + rôn "side, direction;" Av. ravan- "(course of a) river").
Dar "in, into; within," from Mid.Pers. andar, → inter-.
Foru "down, downward; below; beneath" (Mid.Pers. frôt "down, downward;" O.Pers. fravata "forward, downward;" cf. Skt. pravát- "a sloping path, the slope of a mountain").

intracluster medium (ICM)
  مدیم ِ اندرخوشه‌ای   
madim-e andarxuše-yi

Fr.: milieu interamas   

A diffuse (Ne ~ 10-3 cm-3), hot (T ~ 107-108 K), magnetized (B ~ 0.1-10 μG) plasma that exists between galaxies in a → galaxy cluster and is composed mainly of H, He, and → heavy elements. The ICM strongly emits → X-rays (Lx ~ 1045 erg s-1), making it the most luminous extended X-ray source in Universe. While some of the gas has been stripped out of galaxies, it is also likely that some is also primordial in nature, and has been accreted into the clusters. The origin of the ICM is subject of intense investigation. Broadly, two possibilities have been envisaged. The first one considers the intracluster gas to be once contained in galaxies and later driven in the ICM. This would explain several observations: the presence of high → metallicity gas, and H I deficiency of galaxies residing in the cores of rich clusters (which suggests that gas stripping has occurred). Alternatively, the ICM is primordial, originating at the time of cluster formation. Actually the ICM may result from a combination of both scenarios.

intra-; → cluster; → medium.

intramercurial planet
  سیاره‌ی ِ فروتیری   
sayyâre-ye forutiri

Fr.: planète intramercurienne   

A hypothetical planet, named Vulcan, that once was believed to exist between the Sun and Mercury.

intra-; → Mercury; → planet.

intramolecular forces
  نیروها‌ی ِ درون‌ملکولی   
niruh-ye darunmolekuli

Fr.: intramoléculaire   

Within the molecule; occurring by a reaction between different parts of the same molecule.

intra-; → molecular.

intrinsic
  درونگین   
darungin

Fr.: intrinsèque   

Belonging to a thing by its very nature; true; not affected by external factors; → intrinsic brightness. Opposite to extrinsic.

Intrinsic, from M.Fr. intrinsèque "inner," from M.L. intrinsecus "interior, internal," from L. intrinsecus (adv.) "inwardly, on the inside," from intra "within" + secus "alongside," originally "following" (related to sequi "to follow").

Darungin, from darun "in, into; within" (Mid.Pers. andarôn "inside," from andar, → inter-, + rôn "side, direction;" Av. ravan- "(course of a) river") + -gin adj. suffix, contraction of âgin "filled."

intrinsic brightness
  درخشندگی ِ درونگین   
deraxšandegi-ye darungin

Fr.: brillance intrinsèque   

The brightness of an object, such as a star, that is not affected by interstellar absorption and independent of distance.

intrinsic; → brightness.

intrinsic color
  رنگ ِ درونگین   
rang-e darungin

Fr.: couleur intrinsèque   

A → color not affected by → extinction.

intrinsic; → color.

intrinsic luminosity
  تابندگی ِ درونگین   
tâbandegi-ye darungin

Fr.: luminosité intrinsèque   

The energy per second emitted by an astronomical object.

intrinsic; → luminosity.

intrinsic semiconductor
  نیم‌هازا‌ی ِ درونگین   
nimhâzâ-ye darungin ~

Fr.: semiconducteur intrinsèque   

A pure semiconductor containing no → impurity atoms. → extrinsic semiconductor.

intrinsic; → semiconductor.

intrinsic variable
  ورتنده‌ی ِ درونگین   
vartande-ye darungin

Fr.: variable intrinsèque   

A variable star whose fluctuations in brightness are due to natural changes in the luminosity of the star itself, not by external causes, such as in → extrinsic variable stars.

intrinsic; → variable.

introduce
  اندرهاختن، اندرهازیدن   
andarhâxtan, andarhâzidan

Fr.: introduire   

1) To lead or bring in especially for the first time.
2) To bring into practice or use.
3) To present or announce formally or officially or by an official reading (Merriam-Webster.com).

M.E., from L. introducere "to lead inside, to bring in," from intro- "on the inside, within, to the inside," → inter-, + ducere "to lead," → conduct.

Andarhâxtan, andarhâzidan, from andar- "in, into, between," → inter-, + hâxtan, hâzidan "to lead, guide," → conduct.

introduction
  اندرهازش   
andarhâzeš

Fr.: introduction   

1) The act or process of introducing; the state of being introduced.
2) A part of a book or treatise preliminary to the main portion; a preliminary treatise or course of study (Merriam-Webster.com).

Verbal noun of → introduce; → -tion.

intuition
  درگس   
dargas

Fr.: intuition   

The immediate apprehension of knowledge through the use of the senses, without conscious reasoning or analysis. → intuitive, → intuitionism.

M.E., from L.L. intuitionem "a looking at, consideration," noun of action from p.p. stem of intueri "look at, consider," from → in- "at, on" + tueri "to look at, watch over."

Dargas, literally "looking at, consider," from dar-, → in-, + *gas "to look, appear;" cf. Parthian âgas "visible, apparent," pargas- "to observe, take care," related to negâh "look, attention," âgâh "aware, knowing;" Sogd. pcks- "to expect;" Proto-Ir. *kas- "to look, appear" (Cheung 2007).

intuitionism
  درگس‌باوری   
dargas-bâvari

Fr.: intuitionnisme   

A → philosophy of → mathematics that was introduced by the Dutch mathematician L.E.J. Brouwer (1881-1966). Intuitionism is based on the idea that mathematics is a creation of the mind. The truth of a mathematical statement can only be conceived via a mental construction that proves it to be true, and the communication between mathematicians only serves as a means to create the same mental process in different minds (Stanford Encyclopedia of Philosophy).

intuition; → -ism.

intuitive
  درگسی   
dargasi

Fr.: intuitif   

Known or perceived by → intuition. See also → intuitionism.

intuition; → -ive.

invalid
  ناپای‌مند   
nâpâymand

Fr.: invalide   

Logic: The quality of an argument when its conclusion is false even if all the premises are true.

in-; → valid.

invalidity
  ناپای‌مندی   
nâpâymandi

Fr.: invalidité   

invalid; → -ity.

invariable plane
  هامُن ِ ناورتنده   
hâmon-e nâvartandé

Fr.: plan invariable   

Mechanics: For a rotating rigid body not subject to external torque, a plane which is perpendicular to the angular momentum vector of the body, and which is always tangent to its → inertia ellipsoid.

Invariable negation of → variable; → plane.

invariance
  ناورتایی   
nâvartâyi

Fr.: invariance   

Any property of a physical law or quantity that is unchanged after the application of certain classes of transformations.

Invariance; noun of → invariant.

invariant
  ناورتا   
nâvartâ

Fr.: invariant   

A quantity which is independent of the coordinate system. For example the vector product of two vectors is an invariant since it depends only on the magnitude of the two vectors and the angle between them.

From negation prefix → in- + variant, from L. variantem (nom. varians), pr.p. of variare "to change," from varius "varied, different, spotted."

Nâvartâ, from negation prefix nâ-, → in-, + vartâ adj., from vartidan, variant of gardidan, gaštan "to change; to turn," Mid.Pers. vartitan; Av. varət- "to turn, revolve;" cf. Skt. vrt- "to turn, roll," vartate "it turns round, rolls;" L. vertere "to turn;" O.H.G. werden "to become;" PIE base *wer- "to turn, bend."

<< < -es -iv -ti 21- A r abe abs abs acc acc acc act act ada adi adu aff age alc Alf ali all alp alt ama amp ana ang ang ann ano ant ant ape apo app aps arc Arg ari art ass ast ast ast atm ato att aur aut axi B r bac Bal Bar Bar Bay bec Ber Bet Bie bij bin bio bis bla bla blu blu bol Bor bou Bra bre bro Bug C-s cal Cam can car Car Cas cat cav cel cen cer Cha cha cha che cho cir cir cir 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 coo cor cor cor cos cos cos Cou cou Cra Cre cri cro cub cur cyc cyl dar dat daw de- Deb dec dec dee 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 dua dus dwa dyn e-f Ear ecl eco edu eig Ein ela ele ele ele Ele elo emi emp ene Enl env epi equ equ Eri est Euc eva evo exc exc exh Exo exp exp ext ext f(R fac fam fat fee Fer Fib fig fin fir fix fle flu foc for for for fra fre Fre fri fun fuz Gal gal gal Gam gau Gay gen Geo geo geo geo gim glo gov gra gra gra gra gre gro Gun hab hal han Har haz hea hel hel Hen Her het Hig hil hol Hoo hor hou Hub hum hyd hyd hyd hyp hys ide ign ima imp imp inc inc ind Ind inf inf inf inf inn ins ins int int int int int int int int inv ion ion Irr iso iso iso jan jit Jul jus Kel ker kin kni La lam lan Lap las lat Lay Led Len let lif lig lin lin lin liq Lit loc log lon lou low lum lun Lym M d Mag mag mag mag mag mag maj man mar mas mas mat mea mea mec mem mer Mes met met mho mic Mie Mil min mis MKS MOd mol Mon moo mot mul mul myo nak Nas nat neb neg neu neu New New nit noi non non nor nor nuc nuc nul nut obj obl obs occ oct off oli oni ope opp opt opt orb ord org orp osc out ove oxi pai Pan par par Par par pas Pav Pel per per per per Per per pha phi pho pho pho phy Pip Pla pla PLA pla ple plu pol pol pol pol pop pos pos pot Pra pre pre pre Pri pri pri pro pro pro pro pro pro pro Pto pul pur 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 RHB rid rig ris roc Ros rot rub Rut Sag sam sat sca sca Sch sci Sea sec sec see sel sem sen set Sha sha shi shu sid sil sim sin SIS ski Slo smo Soc sol sol sol sol son sou spa spa spe spe spe sph spi spi Spo 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 tel tem ter tes the the the the Tho thr tid tim Tit top tot tra tra TRA tra tre tri tri tru Tun Tus tym Typ ult unb und uni uni uns upp Urs vac van var Vei Ven ver vic Vir vir vis vol W 4 war wat wav wea wed wet wid win WN2 Wol wri xen yok zen zin > >>