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: 13176 Search : far
research reactor
  واژیرگر ِ پژوهشی   
vâžirgar-e pažuheši

Fr.: réacteur de recherche   

A nuclear reactor designed for radionuclide production, materials testing, and training.

research; → reactor.

researcher
  پژوهشگر   
pažuhešgar (#)

Fr.: chercheur   

A scientist who devotes himself to doing research.

Agent noun, from → research + → -or.

reseau
  رزو   
rezo

Fr.: réseau   

A grid of fine lines photographed onto or cut into a glass plate and used as a reference for astronomical observations.

From Fr. réseau, O.Fr. reseuil "little net," from raiz "net," from L. rete "net."

Rezo, loan from Fr., as above.

reside
  نشتیدن   
neštidan

Fr.: résider   

To dwell permanently or for a considerable time.

M.E., from M.Fr. resider and directly from L. residere "sit down, settle; remain behind, rest," from → re- "back, again" + sedere "to sit," cognate with Pers. nešastan "to sit down," as below.

Neštidan, from Baluci ništ-, Kurd. ništin, Gurani nîšt, Awromani ništay-, Gazi ništ, Shahmerzadi -ništ, Gilaki ništoen "to sit down," variant of Pers. nešastan "to sit down, settle down," nešim "nest," Mid.Pers. nišastan "to sit;" O.Pers. nišādayam [1 sg.impf.caus.act.] "to sit down, to establish," hadiš- "abode;" Av. nišasiiā [1 sg.subj.acr.] "I shall sit down," from nihad- "to sit down," from → ni- "down, below," + had- "to sit;" PIE base *sed- "to sit;" cf. Skt. sad- "to sit," sidati "sits;" Gk. hezomai "to sit," hedra "seat, chair;" L. sedere "to sit;" O.Ir. suide "seat, sitting;" Welsh sedd "seat;" Lith. sedmi "to sit;" Rus. sad "garden;" Goth. sitan, Ger. sitzen; E. sit.

residence
  ۱) نشتگاه؛ ۱،۲) نشتمان   
1) neštgâh; 1,2) neštmân

Fr.: résidence   

1) The place, especially the house, in which a person lives or resides; dwelling place; home.
2) The act or fact of residing (Dictionary.com).

reside; → -ence.

Neštgâh, from nešt present stem of neštidanreside + -gâh a suffix of place and time. Neštmân with -mân a suffix of verbl nouns used with present and past stems, as in zâymân, câymân, sâxtemân, sâzmân, goftemân, râžmân.

resident
  نشتنده، نشتگر   
neštandé, neštgar

Fr.: résident   

A person who resides in a place.

reside + -ent, a suffix, equivalent to -ant froming nouns and adjectives.

residual
  مونکی   
munaki

Fr.: résiduel   

Of, relating to, or remaining as a residue; leftover.

residue; → -al.

residual field
  میدان ِ موندکی   
meydân-e mundaki

Fr.: champ résiduel   

The magnetic field left in an iron core after excitation has been removed.

residual; → field.

residue
  مونک   
munak

Fr.: résidu   

1) General: Something that remains after a process involving the removal of part of the original has been completed.
2) Math.: If f(z) is a → complex function, its residue at an isolated → singularity  z0 is defined by the → integral (1/2πi) ∫f(z)dz taken along a simple closed curve interior to an annulus about z0.

M.E., from O.Fr. residu, from L. residuum "a remainder," neuter of residuus "remaining, left over," from residere "to remain behind."

Munak, from mun-, dialectal variant of mân-/mândan "to remain" (e.g., Farizani mundä, Gazi mun-, Khunsâri mûn-, Natanzi, Semnâni -mund, Yghnobi mun-), Mid.Pers. mân-/mândan "to remain, to stay;" O.Pers. mān "to remain, dwell;" Av. mān- "to remain, dwell;" cognate with E. → remain; + relation/diminution suffix -ak.

residue theorem
  فربین ِ مونک‌ها   
farbin-e munakhâ

Fr.: théorème des résidus   

The theorem stating that the value of the line integral of a complex function, taken along a simple closed curve encircling a finite number of isolated singularities, is given by 2πi times the sum of the residues of the function at each of the singularities.

residue; → theorem.

resign
  واگامیدن   
vâgâmidan

Fr.: démisionner   

To give up an office or position, often formally.

M.E. resignen "give up, surrender, abandon; relinquish," from O.Fr. resigner "renounce, relinquish," from L. resignare "to check off, cancel, give back, give up," from → re- "opposite" + signare "to make an entry in an account book," literally "to mark;" → sign.

Vâgâmidan, literally "to step back," from vâ-re- + gâmidan "to step, go, → walk."

resignation
  واگامش   
vâgâmeš

Fr.: démision   

The act of resigning.

Verbal noun from → resign.

resist
  بر‌ایستادن، ایستادگی کردن   
baristâdan (#), istâdegi kardan (#)

Fr.: résister   

To withstand the action or effect of; to strive against, or oppose.

M.E. resisten, O.Fr. resister, from L. resistere "to resist, to stand back, withstand," from → re- "against" + sistere "take a stand, stand firm," cognate with Pers. istâdan, as below.

Baristâdan "to withstand, to stand in opposition," from bar- opposition prefix, → object, + istâdan "to stand," → solstice.
Istâdegi kardan, composite verb, from istâdegi "resistance," state noun from istâdan, + kardan "to do, to make," → -or.

resistance
  بر‌ایستگری، ایستادگی   
baristgari, istâdegi (#)

Fr.: résistance   

1) General: The act or power of resisting, opposing, or withstanding.
2) Electricity: A property of a conductor by virtue of which the passage of current is opposed, causing electric energy to be transformed into heat. It is the quantity that determines the current that results due to a voltage in a simple circuit. For a fixed voltage, if the resistance increases, the current decreases. It is given by the equation R = ΔV/I, where ΔV is the voltage difference and I the current. Resistance has the SI units volts per ampere, called → ohm.

From → resist + -ance a suffix used to form nouns either from adjectives in -ant or from verbs.

Baristgari, from baristgar, → resistant.
Istâdegi "resistance," state noun from istâdé "stood," p.p. of istâdan "to stand," → resist.

resistant
  بر‌ایست‌گر، ایستادگی‌گر   
baristgar, istâdegigar

Fr.: résistant   

1) Characterized by or showing resistance.
2) A person or thing that resists.

Present participle of → resist, with -ant a suffix forming adjectives and nouns from verbs.

Baristgar, from barist present stem of baristâdan, → resist, + -gar, agent suffix, → -or.
Istâdegigar, from istâdegi, → resistance, + -gar.

resistive
  بر‌ایست‌مند   
baristmand

Fr.: résistif   

Capable of or inclined to resistance; resisting.

From resist, → resistance, + → -ive.

Baristmand, from barist present stem of baristâdan, → resist + -mand possession suffix, → -ist.

resistivity
  بر‌ایست‌مندی   
baristmandi

Fr.: resistivité   

A property of a → conductor which is defined as the ratio of the → electric intensity (E) to the → current density (J): ρ = E/J. The greater the resistivity, the greater the intensity needed to establish a given current density, or the smaller the current density for a given intensity. A "perfect" conductor would have zero resistivity, and a "perfect" → insulator an infinite resistivity.

From → resistive + → -ity.

resistor
  بر‌ایستنده   
baristandé

Fr.: résistance   

An electrical component used to introduce a known value of resistance into a circuit.

resist; → -or.

resolution
  واگشود   
vâgošud

Fr.: résolution   

1) The degree to which an → optical system renders visible separate parts of an object. Also known as → angular resolution and → spatial resolution. See also → spectral resolution.
2) The time interval between successive discernible signals. → temporal resolution.

Verbal noun of → resolve.

resolution of a force
  واگشود ِ نیرو   
vâgošud-e niru

Fr.: résolution de force   

Finding the → components of a → force which act in specified → directions.

resolution; → force.


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