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: 13116 Search : far
transmission coefficient
  همگر ِ تراگسیل   
hamgar-e tarâgosil

Fr.: coefficient de transmission   

The ratio given by the → amplitude (or energy) of a transmitted wave divided by the amplitude (or energy) of the incident wave.

transmission; → coefficient.

transmission grating
  توری ِ تراگسیلی   
turi-ye tarâgosili

Fr.: réseau par transmission   

A diffraction grating that has grooves ruled onto a transparent material so that a beam of light passed through the grating is partly split into spectral orders.

transmission; → grating.

transmission loss
  دسترفت ِ تراگسیل   
dastraft-e tarâgosil

Fr.: perte de transmission   

A decrease in power in transmission from one point to another.

transmission; → loss.

transmission system
  راژمان ِ تراگسیل   
râžmân-e tarâgosil

Fr.: système de transmission   

An assembly of elements which are capable of functioning together to transmit power or signals.

transmission; → system.

transmit
  تراگسیلیدن   
tarâgosilidan (#)

Fr.: transmettre   

To cause (light, heat, sound, etc.) to pass through a medium.

M.E. transmitten, from L. transmittere "send across, transfer, pass on," from → trans- "across" + mittere "to send."

Tarâgosilidan, infinitive of tarâgosli, from tarâ-trans- "across" + gosil "sending away, dismission," variant gosi; Mid.Pers. wisé "to despatch" (Parthian Mid.Pers. wsys- "to despatch;" Buddhist Mid.Pers. wsydy "to despatch;" Sogdian 'ns'yd- "to exhort"), from Proto-Iranian *vi-sid- "to despatch, send off," from prefix vi- "apart, away, out," + *sid- "to call."

transmitter
  تراگسیلنده، تراگسیلگر   
tarâgosilandé, tarâgosilgar

Fr.: transmetteur   

A device or equipment which converts audio, video, or coded signals into modulated radio frequency signals which can be propagated by electromagnetic waves.

Agent noun of → transmit.

transmutation
  تراموتش   
tarâmuteš

Fr.: transmutation   

The act or process of transmuting.
Physics: Any process in which a nuclide is transformed into a different nuclide, usually one of a different element.

Verbal noun of → transmute.

transmute
  تراموتیدن   
tarâmutidan

Fr.: transmuter   

To change from one nature, substance, form, or condition into another.

M.E., from L. transmutare "to shift," from → trans- + mutare "to change," from PIE base *mei- "to change, go, move;" cf. Av. miθô "inverted, false," miθaoxta- "wrong spoken;" Skt. methati "changes, alternates, joins, meets," mith- "to alternate, meet," mithás "opposite, in opposition;" L. meare "to go, pass," mutuus "done in exchange;" Goth. maidjan "to change;" E. prefix mis- (in mistake).

Tarâmutidan, from tarâ-trans- + mutidan, from L. mutare, as above.

transparent
  ترانما   
tarânemâ (#)

Fr.: transparent   

Allowing → electromagnetic radiation  of → specific → wavelengths to pass through. See also → translucent.

From M.L. transparentem (nominative transparens), pr.p. of transparere "to show through," from L. → trans- "through" + parere "to come in sight, appear."

Tarânemâ, from tarâ-, → trans-, + nemâ present stem of nemudan "to show" (Mid.Pers. nimūdan, nimây- "to show," from O.Pers./Av. ni- "down; into," → ni- (PIE), + māy- "to measure;" cf. Skt. mati "measures," matra- "measure;" Gk. metron "measure;" L. metrum; PIE base *me- "to measure").

transponder
  تراگو   
tarâgu

Fr.: transpondeur   

An emitter-receiver device that automatically responds upon reception of a designated incoming radar, radio or sonar signal

From trans(mitter), → trans-, + (res)ponder, → responder.

transport
  ۱) ترابرد، ترابری؛ ۲) ترابردن   
1) tarâbord (#), tarâbari (#); 2) tarâbordan

Fr.: transport   

1) The act of carrying or moving from one place to another.
2) To take or carrysomething from one place to another.

M.E. transporten, from O.Fr. transporter "to carry or convey across," from L. transportare, from → trans- "across" + portare "to carry."

Tarâbord, tarâbari, from tarâ-, → trans-, + bord, bari, from bordan "to carry, transport;" Mid.Pers. burdan; O.Pers./Av. bar- "to bear, carry," barəθre "to bear (infinitive);" Skt. bharati "he carries;" Gk. pherein "to carry;" L. ferre "to carry;" PIE base *bher- "to carry."

transpose
  ۱) ترانهادن؛ ۲) ترانهاد   
1) tarânehâdan; 2) tarânehâd

Fr.: 1) transposer; 2) transpose   

1) To transfer a mathematical → term from one side of an → equation to the other, with corresponding change of sign.
2) Of a → matrix, to interchange → rows and → columns.
3) The mathematical object obtained by replacing all → elements aij with aji.

From M.E. transposen, from O.Fr. transposer, from L. transponere "to place over," from → trans- + ponere "to put, place."

Tarânehâdan, tarânehâd, from tarâ-, → trans-, + nehâdan "to place, put; to set;" Mid.Pers. nihâtan; Av. ni- "down; into," → ni- (PIE), + dâ- "to put; to establish; to give," dadâiti "he gives;" cf. Skt. dadâti "he gives;" Gk. didomi "I give;" L. do "I give;" PIE base *do- "to give").

transposed matrix
  ماتریس ِ ترانهاده   
mâtris-e tarânahâdé

Fr.: matrice transposée   

The matrix of → order n x m obtained from a matrix of order m x n by exchanging the order of the → rows and → columns.

Tansposed, p.p. of → transpose; → matrix.

transposition
  ترانهش   
tarâneheš

Fr.: transposition   

Math.: A permutation of a set of elements that interchanges two elements and leaves the remaining elements in their original positions. For example, the swapping of 2 and 5 to take the list 123456 to 153426 is a transposition.
Optics: The changing of the relative curves of a lens without changing its refractive value.

trans-; → position.

transuranium element
  بن‌پار ِ ترا-اورانیومی   
bonpâr-e tarâ-urâniomi

Fr.: élément transuranien   

An element beyond uranium in the periodic table, with atomic number greater than 92. Such elements do not occur in nature, but may be obtained by suitable nuclear reactions. They are all radioactive and members of the actinide group.

trans-; → uranium; → element.

transversal
  تراگذر   
tarâgozar (#)

Fr.: transversale   

A line that cuts across two or more lines. A transversal cutting two lines generates eight angles, four lying between the two lines, four external to the two lines.

transverse + → -al.

transverse
  تراگذر   
tarâgozar (#)

Fr.: transverse   

Lying or extending crosswise or at right angles to something. → transverse velocity; → transverse wave.

From L. transversus "turned or directed across," p.p. of transvertere "to turn across," from → trans- + vertere "to turn," cognate with Pers. gardidan "to turn, to change;" Mid.Pers. vartitan; Av. varət- "to turn, revolve;" Skt. vrt- "to turn, roll," vartate "it turns round, rolls;" O.H.G. werden "to become;" PIE base *wer- "to turn, bend."

Tarâgozar, from tarâ-trans- + gozar "passage, transit, passing," from gozaštan "to pass, cross, transit," variant gozâštan "to put, to place, let, allow;" Mid.Pers. widardan, widâštan "to pass, to let pass (by);" O.Pers. vitar- "to pass across," viyatarayam "I put across;" Av. vi-tar- "to pass across," from vi- "apart, away from" (O.Pers. viy- "apart, away;" Av. vi- "apart, away;" cf. Skt. vi- "apart, asunder, away, out;" L. vitare "to avoid, turn aside") + O.Pers./Av. tar- "to cross over;" → trans-.

transverse gauge
  گز ِ تراگذر   
gaz-e tarâgozar

Fr.: jauge transverse   

Same as the → Coulomb gauge.

transverse; → gauge.

transverse mass
  جرم ِ تراگذر   
jerm-e tarâgozar

Fr.: masse transverse   

In special relativity theory, the mass when the acceleration of a body is perpendicular to its velocity: mt = m0 / [1 - (v/c)2]1/2, where m0 is the → rest mass, v is the velocity, and c the → velocity of light. The transverse mass is identical to the → relativistic mass. See also → longitudinal mass.

transverse; → mass.

transverse velocity
  تندای ِ تراگذر   
tondâ-ye tarâgozar

Fr.: vitesse transverse   

Same as → tangential velocity.

transverse; → velocity.

<< < -es -iv -ti 21 a p abe abs abs aca acc acc acr act ada adh Adr aer aga air Alf Alg alk Alp alt alu amm ana And ang ani ano ant ant Ap apo app app Aqu Arc arg arr asc ass ast ast asy atm ato att aur aut axi B-m bad Bal bar bar Bay Bed ber Bet bif bim bin bio bis bla ble blu Bod Bol bor bou Bra Bre bro bul C-t Cal Cam can car Car Cas cat cav cel cen cer Cha cha Cha che chl Cir cir cir Cla cli clo clu co- coc 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 Cre cri cro cub cur cyc cyl Dan dat Dav de- Deb dec dec dee def deg del Den den der det deu dew dic dif dif dil Dip dir dis dis dis dis dis diu dod Dop dou Dra dua dus dwa dyn DZ 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 ext fac fal far fec Fer fer fie fin fir fis fla Flo flu fog for for Fou fra fre fre Fro fun G s Gal gal gal Gar gau geg gen geo geo geo ger gla gly gra gra gra gra gra Gre gro GYR Had Hal hap Har HD hea hel hel Hen Her hex hig Hil hol Hoo hor hou Hub hum hyb hyd hyd hyp hys ide ign ima imp imp in- inc Ind ind ine inf inf inf ini ins ins ins int int int int Int int int int inv ion iri irr iso iso iso Jea Jor jum K c Kep Ker kin kno lab Lam Lan Lap las lat Le lef len lev lig lig lin lin lin liq Lit loc log lon lou LS lun lun Lym M s Mag mag mag mag mag mag maj man Mar mas mas mat May mea mec mel mer mes met met met mic mid mil Min Mir mix mod mod mol mon mor mov mul mur mys nan nat nav nec Nep neu New New NGC nob nom non non nor nos nuc nuc num nut obj obl obs occ oct off oli oni ope opp opt opt orb ord org orp osc out ove oxi P-w pal par par par par Pas pat pej per per per per per per pha Phe pho pho pho phy pin pla Pla pla pla pla plu poi pol pol Pol pol por pos pot Poy pre pre pre pre pri pri pri pro pro pro pro pro pro Psa pul pum Q i qua qua qua qua R A rad rad rad rad rad rad Ram Ran rat rea rea rec rec red red ref ref reg rei rel rel rem rep res res res ret rev Rho Rie ril riv rog Ros rot rul S A Sag sam sat sca sca Sch Sco Sec sec sec seg sel sem sen set Sha sha shi sho sid sig sim sin Sir ske sli Smo soc sof sol sol sol sol sou sou spa spe spe Spe spe sph spi Spi spr sta sta sta sta sta ste ste ste Sto str str sub sub sub suc sun sup sup sup sup sur swa syn syn tac tas tel tem ter tes the the the the thi thr tid til tip ton tor tou tra tra tra tra Tri tri tru tsu tur two Typ UHE ult unc uni uni uni upg 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 > >>