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
Indus
  سرخپوست، هندی   
Sorxpust (#), Hendi (#)

Fr.: Indien   

The American Indian. A faint, southern constellation (right ascension: 21 hours, declination: -55 degrees), supposed to represent an American native Indian. It was introduced in the 1603 star atlas of Johann Bayer and contains no stars brighter than the third magnitude. Abbreviation: Ind; genitive: Indi.

Indus "an Indian," from L., from Gk. Indos "the Indus River, an Indian."

Sorxpust "red skin," the term coming from the reddish skin color of some native Americans, from sorx, → red, + pust "skin," from Mid.Pers. pôst "skin;" Av. pastô-, in pastô.fraθanhəm "of the breadth of the skin."
Hendi "Indian," Mid.Pers. Hindûk, from Hind "Indian;" O.Pers. hindu- "Sind, a province of the Persian Empire on the upper Indus River," Hinduya- "man of Sind;" Av. hindu-, həndu-; Skt. sindhu- "stream; the Indus; country around the Indus."

inelastic collision
  هم‌کوبش ِ ناکشایند   
hamkubeš-e nâkešâyand

Fr.: collision inélastique   

A collision between bodies in which there is a loss of total kinetic energy.

inelastic; → collision.

inelastic scattering
  پراکنش ِ ناکشایند   
parâkaneš-e nâkešâyand

Fr.: diffusion inélastique   

A type of scattering when the → scattered radiation has a → wavelength different from that of the → incident radiation (→ Raman scattering, → fluorescence ).

inelastic; → scattering.

inequality
  ناهموگی، نابرابری   
nâhamugi, nâbarâbari

Fr.: inégalité   

1) A statement of the form a ≠ b, a > b, or a < b, asserting one quantity is greater than or less than another quantity. → equality.
2) An irregularity in the movement of a celestial object in its orbit about another which cannot be explained by their mutual gravitational attraction. Irregularities are often due to perturbation by other neighboring objects.

in-; → equality.

inert
  لَخت   
laxt (#)

Fr.: inerte   

Having no inherent power of action, motion, or resistance (opposed to active).
Chemistry: A chemically inactive element, compound or material. → inert gas.

Inert, from Fr. inerte, from L. inertem "unskilled, inactive," from → in- "without" + ars (gen. artis) "skill."

Laxt "sluggish, inert."

inert gas
  گاز ِ لَخت   
gâz-e laxt

Fr.: gaz rare, ~ inerte   

Any one of six gases helium, neon, argon, krypton, xenon, and radon, all of whose atomic shells contain complete numbers of electrons so that the atoms are almost completely chemically inactive. Same as noble gases.

inert; → gas.

inertia
  لَختی   
laxti (#)

Fr.: inertie   

Tendency of a body to preserve its state of rest or uniform motion in a straight line.

Inertia, from L. inertia "un-skillfulness, idleness," from iners (gen. inertis) "unskilled, inactive;" → inert.

Laxti "sluggishness, inertia."

inertia ellipsoid
  بیضی‌وار ِ لختی   
beyzivâr-e laxti

Fr.: ellipsoïde d'inertie   

An ellipsoid used in describing the motion of a rotating rigid body. It is stationary with respect to the rotating body, and is determined by the body's moments of inertia.

ellipsoid; → inertia.

inertial
  لختی‌ناک، لختی‌مند   
laxtinâk, laxtimand

Fr.: inertiel, d'inertie   

Of or relating to inertia.

From → inertia + → -al.

Laxt, adj. of laxti, → inertia

inertial force
  نیروی ِ لختی‌ناک، ~ لختی‌مند   
niru-ye laxtinâk, ~ laxtimand

Fr.: force inertielle   

A force arising from the → acceleration of an observer's → frame of reference.

inertial; → force.

inertial frame
  چارچوب ِ لختی‌ناک، ~ لختی‌مند   
cârcub-e laxtinâk, ~ laxtimand

Fr.: référentiel galiléen   

inertial reference frame.

inertial; → frame.

inertial mass
  جرم ِ لختی‌ناک، ~ لختی‌مند   
jerm-e laxtinâk, ~ laxtimand

Fr.: masse inertielle   

The mass of a body as determined from the acceleration of the body when it is subjected to a force that is not due to gravity.

inertial; → mass.

inertial motion
  جنبش ِ لختی‌ناک، ~ لختی‌مند   
jonbeš-e laxtinâk, ~ laxtimand

Fr.: mouvement inertiel   

Motion free of any force, with constant velocity.

inertial; → motion.

inertial oscillation
  نوش ِ لختی‌ناک، ~ لختی‌مند   
naveš-e laxtinâk, ~ laxtimand

Fr.: oscillation inertielle   

1) A periodic motion of a particle that moves, free from external forces, over the surface of a rotating sphere, such the Earth. Inertial oscillations result from the → Coriolis force. For example, a hockey puck launched on a big enough lake in the northern hemisphere would turn to the right (east) and eventually loop back to nearly the initial point (actually west of that point). The time it takes for the huckey puck to return can be computed with the → Coriolis frequency.
2) Meteo.: An anticyclonic (clockwise) rotation in the northern hemisphere, with the Coriolis force providing the → centripetal acceleration with period of 2π/f, where f is the Coriolis frequency. The opposite should occur in the southern hemisphere.

inertial; → oscillation.

inertial reference frame
  چارچوب ِ بازبرد ِ لختی‌ناک، ~ ~ لختی‌مند   
cârcub-e bâzbord-e laxtinâk, ~ ~ laxtimand

Fr.: référentiel galiléen   

A → reference frame or coordinate system in which there are no accelerations, only zero or uniform motion in a straight line. According to the special theory of relativity, it is impossible to distinguish between such frames by means of any internal measurement.

inertial; → reference; → frame.

infall
  درون‌اُفت   
darun-oft

Fr.: chute vers le centre   

The fall of matter toward the center of a region of gravitational influence.

Infall, from → in- + → fall.

Darun-oft, from darun- "in, into; within" (Mid.Pers. andarôn "inside," from andar, → inter-, + rôn "side, direction;" Av. ravan- "(course of a) river") + oft, → fall.

infect
  فژیدن   
fažidan

Fr.: infecter   

To affect, cause infection, or contaminate with a pathogenic microorganism or agent.

M.E. infecten, from L. infectus, p.p. of inficere "to immerse in dye, discolor, taint, poison," from equivalent to → in- + → -fac, combining form of facere "to do, make," → fact, + -tus p.p. suffix; from PIE root *dhe- "to set, put."

Fažidan, infinitive from faž "dirt, filth, pus;" related word faže, fažnâk, fažgen, fažegen, fažgin, fažqand "filthy, dirty;" of unknown origin. It may be related to Proto-Ir. root *xard- "to defecate," with offshoots xard "muddy place," xarra "mud," (+ *pati-) payxâl "excrement."

infected
  فژیده   
fažide

Fr.: infecté   

1) Affected with a disease-causing organism.
2) Computers: Affected with a → virus.

P. p. of → infect.

infectiology
  فژه-شناسی   
fažešenâsi

Fr.: infectiologie   

A branch of medicine that deals with the diagnosis, management and treatment of various infectious or contagious diseases.

infection; → -logy.

infection
  فژه، فژش   
faže, fažeš

Fr.: infection   

1) An act or fact of infecting; state of being infected.
2) An infecting agency or influence.
3) An infectious disease.
4) Computers: The presence of a virus in, or its introduction into, a computer system.

Verbal noun of → infect.

<< < -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 > >>