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: 12948 Search : far
record
  ۱) واگت؛ ۲) واگتیدن   
1) vâgat; 2) vâgatidan

Fr.: 1) enregistrement; 2) enregistrer   

1a) An act of recording.
1b) The state of being recorded, as in writing.
1c) Something on which sound or images have been recorded for subsequent reproduction, as a grooved disk that is played on a phonograph or an optical disk for recording sound (audiodisk) or images (videodisk).
2a) To set down in writing or the like, as for the purpose of preserving evidence.
2b) To set down or → register in some permanent form, as on a seismograph.
2c) To set down, register, or fix by characteristic marks, incisions, magnetism, etc., for the purpose of reproduction by a phonograph or magnetic reproducer; to make a recording of.

From M.E. recorden "to repeat, to report," from O.Fr. recorder "to get by heart," from L. recordari "to call to mind, remember," from → re- "back, again" + cor "heart" (as the metaphoric seat of memory, as in learn by heart).

Vâgat literally "to take, seize, to take back," cf. Ger. aufnehmen "to record," from nehmen "to take;" E. "take down" "to note down;" Šahmirzâdi vagatan "to take," Lâhijâni vitan "to take, seize," Aftari veytu "to take," Delijâni bitan "to take," var of Tâleši gate, Târi gata/ger, Sorxeyi gil, variants of gereftan, → concept.

rectangle
  راستگوشه   
râstgušé (#)

Fr.: rectangle   

A → quadrilateral all of whose angles are → right angles.

M.Fr. rectangle, from M.L. rectangulum "a triangle having a right angle," from rect-, combining form of rectusright + angulum, → angle.

Râstgušé, from râst, → right, + gušé "corner, angle;" Mid.Pers. gôšak "corner."

rectangular
  راستگوش   
râstguš (#)

Fr.: ractangulaire   

Having the base or section in the form of a rectangle. Shaped like a rectangle.

Adj. of → rectangle.

rectangular window
  روزنه‌ی ِ راستگوش   
rowzane-ye râstguš

Fr.: fenêtre rectangulaire   

A → window function that is constant inside a specified interval.

rectangular; → window.

rectification
  راستش   
râsteš

Fr.: rectification   

1) Math.: The process of determining the length of a curve.
2) Physics: Conversion of an alternating into a direct current.
3) Astro.: The process of rectifying a spectrum.

Verbal noun of → rectify.

rectified spectrum
  بیناب ِ راستیده   
binâb-e râstidé

Fr.: spectre rectifié   

A spectrum after correction for detector's → baseline.

Rectified p.p. of → rectify; → spectrum.

rectifier
  راستگر   
râstgar

Fr.: rectificateur   

1) General: A person or thing that rectifies.
2) Physics: A device for transforming an → alternating current into a → direct current.

Agent noun of → rectify.

rectify
  راستیدن، راست گرداندن   
râstidan, râstgardândan

Fr.: rectifier   

1) General: To make, put, or set right; to correct.
2) Electricity: To convert an → alternating current into a → direct current.
3) Chem.: To refine a substance, especially by repeated distillation or sublimation.

M.E. rectifien, from O.Fr. rectifier "to make straight," from L.L. rectificare "make right," from L. rectus "straight," cognate with Pers. râst, as below, → right + root of facere "to make, do, perform" (cf. Fr. faire, Sp. hacer), from PIE base *dhe- "to put, to do" (cf. Mod.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives; puts;" Skt. dadáti "puts, places;" Hitt. dai- "to place;" Gk. tithenai "to put, set, place;" Lith. deti "to put;" Czech diti, Pol. dziac', Rus. det' "to hide," delat' "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do").

Râstidan, literally "to make straight, right," infinitive from râst cognate with L. rectus "straight," → right.

rectilinear
  راست-خط   
râst-xatt (#)

Fr.: rectiligne   

In a straight line; consisting of straight lines. → curvilinear

From recti- combining form of rectus, → right, + → line + -ar, variant of the adjective-forming suffix → -al.

Râst-xatt, from râst, → right, + xattline.

rectilinear propagation of light
  توچش ِ راست‌خط ِ نور   
tuceš-e râst-xatt-e nur

Fr.: propagation rectiligne de la lumière   

The motion of light in the first approximation, as evidenced from the formation of shadows and other every day experience. However, → diffraction

rectilinear; → propagation; → light.

rectilinear system
  راژمان ِ راست‌خط   
râžmân-e râst-xatt

Fr.: système rectilinéaire   

An optical system that is corrected for → distortion and → spherical aberration and therefore forms the image of a straight line as a straight line.

rectilinear; → system.

recur
  باز‌آمدن   
bâzâmadan

Fr.: se reproduire périodiquement, revenir   

To occur again, as an event, experience, etc.

From L. recurrere "to return, run back," → re- + currere "to run," → current.

Bâzâmadan "to come back, return," from bâz, → re-, + âmadan "to come, arrive, become" (present stem ây-); Av. ay- "to go, to come," aēiti "goes;" O.Pers. aitiy "goes;" Skt. e- "to come near," eti "arrival;" L. ire "to go;" Goth. iddja "went;" Lith. eiti "to go;" Rus. idti "to go."

recurrence
  باز‌آمد   
bâzâmad

Fr.: récurrence   

1) An act or instance of recurring.
2) Return to a previous condition, habit, subject, etc. (Dictionary.com). → recurrence relation.

Verbal noun of → recur.

recurrence relation
  باز‌آنش ِ باز‌آمد   
bâzâneš-e bâzâmad

Fr.: relation de recurrence   

A → sequence based on a → rule that gives the next → term as a → function of the previous term(s). For example, the sequence 3, 9, 21, 45,... can be represented by the recurrence relation un+1 = 2un + 3, where u1 = 3 and n ≥ 1.

recurrence; → relation.

recurrent
  باز‌آیند   
bâzâyand

Fr.: récurrent   

Occurring or appearing again, especially repeatedly or periodically (Dictionary.com). → recurrence nova.

Verbal adj. from → recur.

recurrent nova
  نو‌اختر ِ باز‌آیند   
now-axtar-e bâzâyand

Fr.: nova récurrente   

A → cataclysmic variable star that undergoes → outbursts similar to those found in novae.

recurrent; → nova.

recursion
  باز‌آیش   
bâzâyeš

Fr.: récursion, récursivité   

1) A running backward, return.
2) Math.: A process in which objects are defined by the repeated application of a rule or algorithm.

From L. recursionem (nominative recursio); → recurrent.

Bâzâneš, verbal noun of bâzâmadan, → recur.

recursive
  باز‌آیشی   
bâzâyeši

Fr.: récursif   

1) Pertaining to or using a rule or procedure that can be applied repeatedly.
2) Math.: Pertaining to or using the process of → recursion.

Adjective from → recursion.

recursive definition
  هدارش ِ باز‌آیشی   
hedâreš-e bâzâyeši

Fr.: définition récursive   

Math.: A definition of a function from which values of the same function can be calculated in a finite number of steps. In mathematical logic and computer science, a recursive definition is used to define an object in terms of itself. An example is the → factorial: n! = n*(n-1)!

recursive; → definition.

recycle
  ۱) بازچرخ کردن؛ ۲) بازچرخ شدن   
1) bâzcarx kardan; 2) bâzcarx šodan

Fr.: 1) recycler; 2) se recycler   

1) To treat or process used material so that it can be used again.
2) To repeat or pass through a process again. → recycled pulsar.

re-; → cycle.

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